Sine, cosine, tangent, inverse trig, triangle, and angle calculators.
Most used tools
Calculate sin(θ) for any angle in degrees or radians.
Calculate cos(θ) for any angle in degrees or radians.
Solve a right triangle by entering any two known sides or angles.
Find c = √(a² + b²) for a right triangle.
Recently popular tools
25 tools available
Calculate sin(θ) for any angle in degrees or radians.
Calculate cos(θ) for any angle in degrees or radians.
Calculate tan(θ) for any angle in degrees or radians.
Calculate csc(θ) = 1/sin(θ) for any angle.
Calculate sec(θ) = 1/cos(θ) for any angle.
Calculate cot(θ) = 1/tan(θ) for any angle.
Calculate arcsin(x) to find the angle from a sine value.
Calculate arccos(x) to find the angle from a cosine value.
Calculate arctan(x) to find the angle from a tangent value.
Solve a right triangle by entering any two known sides or angles.
Solve triangles using a/sin(A) = b/sin(B) = c/sin(C).
Calculate c² = a² + b² - 2ab·cos(C) to solve any triangle.
Find c = √(a² + b²) for a right triangle.
Use sine, cosine, or tangent ratios to find missing sides of a right triangle.
Verify trigonometric identities like sin²(θ) + cos²(θ) = 1.
Apply double angle formulas for sin, cos, and tan.
Apply half angle formulas for sin, cos, and tan.
Convert sin(A) ± sin(B) and cos(A) ± cos(B) into product form.
Convert sin(A)sin(B), cos(A)cos(B), and sin(A)cos(B) into sum form.
Simplify trigonometric expressions and evaluate them numerically.
Convert (r, θ) polar coordinates to (x, y) Cartesian coordinates.
Convert (x, y) Cartesian coordinates to (r, θ) polar coordinates.
Convert between radians and degrees.
Solve equations of the form f(x) = k for trig functions within a range.
Find the angle of elevation from a height and horizontal distance.
More math tools available
Our trigonometry calculators provide accurate, instant results for students, teachers, and professionals. Each calculator uses mathematically verified formulas and handles edge cases like invalid inputs, division by zero, and overflow conditions.
Whether you need to solve equations, compute integrals, find prime factors, or convert between number bases, our trigonometry tools deliver reliable results with step-by-step explanations to help you understand the underlying mathematics.
