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When sine of x degrees equals sine of x radians

· John Cook · July 22, 2026, 12:54 p.m.

Math Number theory mathematics trigonometry Sine Function Calculator Tips

Summary

This post examines the rarely discussed scenario when the sine of an angle expressed in degrees equals the sine of the same angle expressed in radians. It highlights special cases, including when x = 0, and discusses the importance of using the correct mode on calculators.

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