Pythagorean theorem
Enter any two sides of a right triangle and the calculator solves for the third side and triangle area.
Open calculatorTrigonometry (sin, cos, tan)
Converts the angle from degrees to radians (angle × π / 180) and evaluates sine, cosine and tangent. Tangent is undefined when cosine equals zero (90°, 270°, etc.).
°
Sine (sin)
0.5
Cosine (cos)
0.866025
Tangent (tan)
0.57735
Radians (rad)
0.523599
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At 30°, sin(30°) = 0.5 and cos(30°) = √3/2 ≈ 0.866.
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Educational estimate only. Not medical, tax, legal or financial advice.