Trig Identities Calculator

Your details

The angle to evaluate. Enter in degrees (e.g. 30, 45, 60, 90) or radians.
sin(θ)
0.5

Sine of the angle

cos(θ)0.866025
tan(θ)0.57735
csc(θ)2
sec(θ)1.154701
cot(θ)1.732051
Identity LHS1
Identity RHS1
Identity verifiedsin²(30°) + cos²(30°) = 1 = 1
sin(θ)0.5
cos(θ)0.866025
tan(θ)0.57735

Pythagorean identity verified at 30 degrees

  • sin(30 degrees) = 0.5, cos(30 degrees) = 0.866.
  • tan(30 degrees) = 0.5774.
  • The Pythagorean identity holds: LHS = RHS = 1.
  • Your angle falls in Quadrant I (all positive).

Next stepTry the double-angle or sum and difference family to see how the same angle combines with itself or a second angle.

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