2D Distance Calculator
Calculate the distance between two points in 2D space using Euclidean, Manhattan, or Chebyshev metrics. Also computes midpoint, slope, and component breakdown.
Free Trigonometry Calculators
69 toolsSine, cosine, tangent, distance, angle, and vector calculators. Browse our free trigonometry tools below — no sign-up required.
3D Distance Calculator
Calculate the Euclidean distance between two points in 3D space, plus midpoint, direction cosines, direction angles, and 2D projection comparisons.
Arccos Calculator (Inverse Cosine)
Calculate the inverse cosine (arccos) of any value from −1 to 1. Returns the angle in degrees and radians, plus related trig values, quadrant, and unit circle position.
Arcsin Calculator (Inverse Sine)
Calculate the inverse sine (arcsin) of any value from −1 to 1. Returns the angle in degrees and radians, plus cosine, tangent, quadrant, reference angle, and unit circle position.
Arctan Calculator (Inverse Tangent)
Calculate the inverse tangent (arctan) of any value. Supports both atan(x) and atan2(y,x) modes for full 360° angle resolution. Returns degrees, radians, quadrant, and related trig values.
Arctan Calculator with Taylor Series & Step-by-Step — tan⁻¹(x)
Detailed inverse tangent calculator with Taylor series approximation, convergence analysis, step-by-step computation, and relationship to other inverse trig functions.
Arcus Tangent (atan2) Calculator — Full Quadrant Arctangent
Calculate atan2(y, x) with full quadrant awareness. Enter y and x coordinates to find the angle in degrees and radians, quadrant, reference angle, magnitude, and normalized direction vector.
Complementary & Supplementary Angles Calculator
Find the complement (90° − θ) and supplement (180° − θ) of any angle. See cofunction identities, trig values of both angles, and the explement. Includes angle pair tables and visual bars.
Complex Number to Rectangular Form Calculator (Polar → a + bi)
Convert a complex number from polar/trigonometric form r(cos θ + i sin θ) to rectangular form a + bi. Shows real part, imaginary part, Euler form, conjugate, and quadrant.
Complex Number to Trigonometric Form Calculator (a + bi → Polar)
Convert a complex number from rectangular form a + bi to trigonometric (polar) form r(cos θ + i sin θ). Shows modulus, argument, exponential form, quadrant, reciprocal, and De Moivre powers.
Conic Sections Calculator — Circle, Ellipse, Parabola, Hyperbola
Identify and analyze conic sections from the general equation Ax² + Bxy + Cy² + Dx + Ey + F = 0. Find the type, center, foci, vertices, eccentricity, and standard form for circles, ellipses, parabo...
Consecutive Integers Calculator
Find consecutive integers that sum to a target value, generate integer sequences, and explore even and odd consecutive integers with formulas and visualizations.
Coordinate Distance Calculator
Calculate the distance between two points in a coordinate plane using Euclidean, Manhattan, Chebyshev, and Minkowski metrics with midpoint, slope, and angle analysis.
Cos Inverse Calculator (arccos / cos⁻¹)
Calculate the inverse cosine (cos⁻¹) of any value from −1 to 1. Returns the angle in degrees, radians, and gradians with unit circle visual.
Cos(2θ) Double Angle Calculator
Calculate cos(2θ) using all three double-angle formulas: 1−2sin²θ, 2cos²θ−1, and cos²θ−sin²θ. Verify equality, explore special angles, and visualize form comparisons.
Cosecant Calculator (csc θ)
Calculate the cosecant of any angle in degrees, radians, or gradians. Shows all 6 trig functions, quadrant sign chart, common values table, and reference identities.
Cosh Calculator (Hyperbolic Cosine)
Calculate the hyperbolic cosine cosh(x) and all six hyperbolic functions. Includes identity verification, comparison table, and custom range generator.
Cosine (cos) Calculator
Calculate the cosine of any angle in degrees or radians. View all six trig functions, quadrant, reference angle, and a complete common cosine values table.
Cosine Similarity Calculator — Vectors & Angles
Calculate cosine similarity between two vectors in 2D–5D. Shows dot product, magnitudes, angle, similarity gauge, and component breakdown table.
Cotangent Calculator (cot θ)
Calculate the cotangent of any angle in degrees or radians. Shows all 6 trig functions, quadrant visual, common values table, and identity reference.
Coterminal Angle Calculator
Find coterminal angles by adding or subtracting 360° (2π). Shows reference angle, quadrant, trig values, and generates a table of N coterminal angles.
Distance Between Two Points Calculator
Calculate the distance between two points in 2D or 3D space. Shows midpoint, slope, line equation, displacement vector, and step-by-step solution with coordinate visualization.
Distance Calculator — Euclidean, Manhattan, Chebyshev & Minkowski
Calculate distances between two points using Euclidean, Manhattan, Chebyshev, and Minkowski metrics in 2D or 3D with step-by-step breakdown and visual comparison.
Distance from Point to Plane Calculator
Calculate the perpendicular distance from a point to a plane in 3D space. Shows signed distance, normal vector, foot of perpendicular, formula breakdown, and verification.
Double Angle Calculator — sin(2θ), cos(2θ), tan(2θ)
Calculate double angle formulas for sin(2θ), cos(2θ), and tan(2θ). Shows all three cos(2θ) forms, verification table, original vs double angle comparison, and identity reference.
Double Angle Formula Calculator
Explore sin(2θ), cos(2θ) in three forms, and tan(2θ) with step-by-step proofs, power-reducing derivations, and a comparison table.
Double-Angle Identity Verifier Calculator
Verify all double-angle identities for any angle. Compare LHS vs RHS, check error margins, and explore power-reducing and half-angle connections.
Euclidean Distance Calculator (N-Dimensional)
Calculate Euclidean distance in 2D to 10D with step-by-step breakdown, component analysis, and comparison with Manhattan and Chebyshev distances.
Half-Angle Formula Calculator
Calculate sin(θ/2), cos(θ/2), and tan(θ/2) with automatic sign by quadrant, three tan forms, and double-angle back-verification.
Hyperbolic Sine Calculator — sinh(x) with All 6 Functions
Calculate sinh(x) and all 6 hyperbolic functions. Shows identity verification, comparison with regular trig, common values table, and inverse hyperbolic results.
Hypotenuse Calculator — Right Triangle Solver
Calculate the hypotenuse or missing leg of a right triangle, plus area, angles, altitude, inradius, and special triangle detection.
Intersection of Two Lines Calculator — Find Where Lines Cross
Find the intersection point of two lines in slope-intercept, point-slope, or general form. Shows angle between lines, parallel/perpendicular detection, and coordinate visualization.
Inverse Cosine (arccos) Calculator
Calculate the inverse cosine (arccos) of any value from −1 to 1. Get the principal value in degrees and radians, general solutions, related trig values, and a reference table.
Inverse Cosine (arccos) Calculator — Degrees, Radians & More
Calculate the inverse cosine (arccos) of any value. Get results in degrees, radians, gradians, and turns with domain checking, related trig values, and a common values reference table.
Inverse Sine (arcsin) Calculator — Degrees, Radians & Unit Circle
Calculate the inverse sine (arcsin) of any value. Get results in degrees, radians, gradians, and turns with domain checking, unit circle visualization, and all 6 inverse trig comparisons.
Inverse Sine Calculator (arcsin / sin⁻¹)
Calculate arcsin (sin⁻¹) of any value from −1 to 1. Shows result in degrees, radians, gradians, general solution, domain check, and common values reference.
Inverse Tangent (arctan) Calculator — arctan & atan2 Modes
Calculate arctan(x) or atan2(y,x) with full quadrant support. Get results in degrees, radians, gradians, and turns with quadrant identification, common values table, and atan-vs-atan2 comparison.
Inverse Tangent Calculator (tan⁻¹ / arctan) — Degrees & Radians
Calculate arctan (tan⁻¹) of any value. Get results in degrees, radians, gradians, and turns. Includes atan2 mode, common values table, and visual range indicator.
Inverse Trigonometric Functions Calculator — All 6 at Once
Calculate all six inverse trig functions simultaneously: arcsin, arccos, arctan, arccsc, arcsec, arccot. Enter a value and see every result with domain checking, identities, and visual comparison.
Law of Cosines Calculator — Solve Any Triangle
Solve any triangle using the law of cosines. Find unknown sides or angles, compute area, perimeter, circumradius, inradius, and classify the triangle type.
Law of Sines Calculator — Triangle Solver with Ambiguous Case
Solve triangles using the law of sines. Handles AAS, ASA, and SSA configurations including the ambiguous case with 0, 1, or 2 solutions.
Line of Intersection of Two Planes Calculator
Find the line where two planes intersect in 3D space. Computes direction vector, parametric equations, a point on the line, and the angle between the planes.
Manhattan Distance Calculator — Taxicab & L1 Distance
Calculate Manhattan (taxicab/L1) distance in 2D, 3D, or N dimensions. Compare with Euclidean and Chebyshev distances with component breakdown and grid visualization.
Phase Shift Calculator — Amplitude, Period, Vertical Shift & Graph
Calculate phase shift, amplitude, period, and vertical shift for y = A·sin(Bx + C) + D. Visualize the function with an interactive SVG graph and key-point tables.
Polar to Rectangular Coordinates Converter
Convert between polar (r, θ) and rectangular (x, y) coordinates. Bidirectional conversion with quadrant visualization, unit circle reference, and batch table.
Pythagorean Theorem Calculator — Right Triangle Solver
Solve right triangles with the Pythagorean theorem. Find any side, angles, area, perimeter, altitude, inradius, circumradius, and detect special triples.
Pythagorean Triples Generator & Checker
Generate Pythagorean triples up to any limit, find triples containing a given number, and check whether three numbers form a valid Pythagorean triple.
Rectangular to Polar Coordinates Calculator
Convert rectangular (x, y) to polar (r, θ) coordinates in degrees, radians, or gradians. Quadrant detection, batch mode, visual plot, and reference table.
Reference Angle Calculator — Find the Reference Angle
Find the reference angle for any angle in degrees or radians. Shows coterminal angle, quadrant, trig values, ASTC sign chart, and unit circle visualization.
Secant Calculator — sec(θ) with Full Trig Breakdown
Calculate sec(θ) = 1/cos(θ) in degrees, radians, or gradians. All 6 trig functions, identity verification, asymptote warnings, sign chart, and common values.
Sin Cos Tan Calculator — All 6 Trig Functions
Calculate sin, cos, tan, csc, sec, and cot of any angle. Shows quadrant analysis, ASTC rule, Pythagorean identity check, full 0°–360° reference table, and exact values.
Sin in Degrees Calculator
Calculate the sine of any angle in degrees. Shows radians equivalent, all 6 trig functions, sine curve visual, common values table, and custom range generator.
Sin Theta Calculator — sin(θ) Exact & Decimal Values
Calculate sin(θ) for any angle with exact values, Taylor series approximation, all 6 trig functions, quadrant visual, and standard angle reference table.
sin(2θ) Double Angle Calculator
Calculate sin(2θ) using the double-angle formula 2·sin(θ)·cos(θ). Step-by-step solution, identity verification, projectile range, and triangle area applications.
Sine Calculator (sin θ)
Calculate the sine of any angle in degrees, radians, or gradians. Shows all 6 trig functions, quadrant analysis, exact values, sine wave visual, and reference table.
Singular Value Decomposition (SVD) Calculator
Compute singular values of 2×2 and 3×3 matrices. Shows σ₁, σ₂, σ₃, condition number, rank, Frobenius norm, and step-by-step eigenvalue decomposition.
Standard Form Calculator — Scientific & Engineering Notation
Convert numbers to and from standard form (scientific notation). Shows mantissa, exponent, engineering notation, SI prefix, expanded form, and arithmetic operations.
Standard Notation Converter — All Number Formats
Convert between standard notation, scientific, engineering, hexadecimal, and word forms. Shows place value breakdown, SI prefix reference, and magnitude comparison.
Sum & Difference Identities Calculator — sin(A±B), cos(A±B), tan(A±B)
Compute exact and decimal values for all six sum and difference trig identities. Step-by-step derivation, intermediate values, and exact forms for special angles.
Supplementary Angles Calculator — Find 180° Pairs & Trig Values
Calculate supplementary angles (180° − θ), complementary angles (90° − θ), and explement (360° − θ). Visual angle bars, trig identities, and common angle pair tables.
Tangent Calculator (tan θ) — All Trig Functions & Quadrant Info
Calculate the tangent of any angle in degrees, radians, or gradians. See all 6 trig functions, asymptote warnings, quadrant identification, and a common values table.
Tangent of Angle Between Two Lines Calculator — Slope & Equation
Calculate the tangent of the angle between two lines using slopes or equations. Detect parallel and perpendicular lines, find acute and obtuse angles, with visual intersection diagram.
Tanh Calculator (Hyperbolic Tangent)
Calculate tanh(x) and all six hyperbolic functions. Compare tanh vs sigmoid, verify identities, explore common values with visual saturation curves.
Theta Calculator — Angle Converter, Trig Values, Quadrant & Unit Circle
Multi-purpose theta calculator: convert between degrees, radians, gradians, and turns. Find all 6 trig values, reference angle, quadrant, coterminal angles, and unit circle visualization.
Trig Identities Calculator & Verifier
Verify 24+ trig identities for any angle. Pythagorean, reciprocal, double angle, half angle, sum/product formulas with pass/fail status and error analysis.
Trigonometry Calculator — Solve Any Triangle
Solve right and oblique triangles. Enter sides and angles to find all unknowns, area, circumradius, and inradius. SSS, SAS, ASA, AAS, SSA modes included.
Trigonometry Calculator (All Functions)
Calculate all 6 trig functions, reciprocals, and inverses for any angle. Quadrant analysis, unit circle visual, and special angles reference table.
Trigonometry Degree Calculator (DMS & Decimal)
Calculate trig functions for degree inputs. Convert between DMS and decimal degrees, generate range tables, and reference common angle values.
Union & Intersection Calculator (Set Operations)
Calculate union, intersection, difference, and symmetric difference of two sets. Venn diagram, Jaccard similarity, power set size, and complement analysis.