Trigonometric functions and identities
Calculate sin²(x), cos²(x), and tan²(x) using the power-reducing trig identities and the cos(2x) formula. Enter any angle…
Enter any angle and explore every trig identity it satisfies: the Pythagorean identity, reciprocal and quotient identities,…
Calculate the cotangent of any angle instantly. Enter the angle in degrees, radians, or gradians and get cot(x) as a decimal…
Calculate the secant of any angle instantly, or work backwards from a sec value to the angle. Enter degrees, radians, or…
Solve any inverse trigonometric function — arcsin, arccos, arctan, arccot, arcsec and arccsc — in one calculator. Enter a…
Calculate the tangent of any angle instantly. Enter the angle in degrees, radians, or gradians and get tan(α) as a decimal…
Calculate the cosecant of any angle instantly, or work backwards from a csc value to the angle. Enter degrees, radians, or…
Find every double angle identity in one place. Enter an angle θ in degrees, radians, or gradians and instantly get sin(2θ)…
Calculate the cosine of any angle instantly. Enter the angle in degrees, radians, or gradians and get cos(α) as a decimal…
Calculate the sine of any angle instantly, or work backwards from a sine value to the angle. Enter degrees, radians, or gradians…
Find the arccos (inverse cosine) of any value between −1 and 1 instantly. Get the angle in degrees, radians, and gradians.…
Calculate sin(x/2), cos(x/2), and tan(x/2) using half-angle trig identities. Enter any angle in degrees or radians and instantly…
This site uses cookies to improve your experience. By continuing to use the site, you agree to our Privacy Policy.