Trigonometry Calculators
Last updated: September 2026
Sector Area Calculator
Compute the area of a pie-slice shaped sector of a circle using its radius and central angle.
Right Triangle Calculator
Calculates the hypotenuse, area, perimeter, and angles of a right triangle from its two legs.
Oblique Triangle Solver (Law of Sines & Cosines)
Solve any non-right triangle given two angles and a side (AAS/ASA), two sides and an angle (SAS/SSA), or find its area.
Triangle Area Calculator (Trigonometry)
Compute the area of any triangle when you know two sides and the angle between them.
Triangle Solver Calculator
Solve any triangle by entering two sides and the included angle.
Triangle Area Calculator
Calculates the area of any triangle from two sides and the included angle (the SAS formula): A = ½·a·b·sin(C).
Inverse Sine Calculator
Find the angle whose sine equals a given value using the arcsine (sin⁻¹) function.
Law of Cosines Calculator
Finds the third side of a triangle when two sides and the included angle are known, using c = √(a² + b² − 2ab·cos(C)).
Sine Cosine Tangent Calculator
Evaluates all six trigonometric functions—sin, cos, tan, csc, sec, and cot—for any angle in degrees, radians, or gradians.
Right Triangle Solver
Find the hypotenuse of a right triangle when you know the adjacent side length and the angle at the base.
Law of Sines Calculator
Find a missing side, angle, or area of any triangle using the Law of Sines.
Right Triangle Trigonometry Calculator
Find any missing side of a right triangle from one side and one angle using sine, cosine, or tangent.
Inverse Trigonometric Functions Calculator
Find the angle whose sine, cosine, or tangent equals a given value.
Unit Circle Coordinates Calculator
Compute the exact (x, y) coordinates of any point on a circle given an angle and radius.
Unit Circle Calculator
Find the point (cos θ, sin θ) on the unit circle for any angle in degrees, together with the Pythagorean identity value cos²θ + sin²θ = 1.
Sine Wave Properties Calculator
Calculate the instantaneous value of a sine wave at any point in time given its amplitude, frequency, and phase shift.
Sinusoidal Wave Function Calculator
Evaluate a sinusoidal wave function y = A·sin(B(x − C)) + D at any x value given its amplitude, frequency, phase shift, and vertical shift.
Sine Calculator
Calculates the sine of an angle entered in degrees, returning a value between −1 and 1.
Trigonometric Identity Verifier
Verify and evaluate key trigonometric identities — Pythagorean, double-angle sine, and double-angle cosine — for any angle in degrees or radians.
Arc Length Calculator
Compute the approximate arc length of a curve f(x) between two x-values using a constant average derivative.
Sine & Cosine Wave Calculator
Calculate the instantaneous value of a sine or cosine wave at any moment in time, given amplitude, frequency, and phase shift.
Cosine Calculator
Calculates the cosine of an angle entered in degrees, returning a value between −1 and 1.
Bearing and Navigation Calculator
Finds the compass bearing and great-circle direction between two geographic coordinates.
Trigonometric Identity Calculator
Evaluate common trigonometric identities — Pythagorean, double-angle, and half-angle — at any angle.
Tangent Calculator
Calculates the tangent of an angle entered in degrees, representing the ratio of opposite to adjacent in a right triangle (or rise/run for a slope).
Trigonometric Identities Calculator
Verify and compute trigonometric identities including sine/cosine sum formulas and double-angle formulas.
Simple Harmonic Motion Calculator
Computes the instantaneous displacement, velocity, or acceleration of an oscillating object undergoing simple harmonic motion.
Spherical Triangle Calculator
Solve spherical triangles on the surface of a sphere given two arc sides and the included angle.
Polar to Rectangular Coordinate Converter
Converts coordinates between polar form (r, θ) and rectangular form (x, y).