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\begin{aligned}90^{\circ}&=\frac{\pi}{2}\,\mathrm{rad}\\180^{\circ}&=\pi\,\mathrm{rad}\\1^{\circ}&=\frac{\pi}{180}\,\mathrm{rad}\end{aligned}
FORMULA CHAPTER
Chapter 20 – Concept of Measurement of Angle
WBBSEClass 10Mathematics1 formulas
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Degree–Radian Conversion
\begin{aligned}90^{\circ}&=\frac{\pi}{2}\,\mathrm{rad}\\180^{\circ}&=\pi\,\mathrm{rad}\\1^{\circ}&=\frac{\pi}{180}\,\mathrm{rad}\end{aligned}
SymbolMeaningUnit
πpi—
Worked example
Given: 60° Calculation: 60×π/180 Answer: π/3 rad.