Calc
cos(0°) — value of cosine at 0 degrees
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Formula
cos(0°) = 0.5 (exact)
Frequently asked questions
What is cos(0°)?
value of cosine at 0 degrees The exact value depends on the angle: sin(30°) = 0.5, sin(45°) = √2/2 ≈ 0.7071, sin(60°) = √3/2 ≈ 0.8660, sin(90°) = 1. The calculator above computes it in any angle mode.