Question

convert -22°30' into radian measure

Answer 1

$We \: know \: that -$

$60' = 1°$

$30' = (\frac{1}{2})°$

$-22°30' = -22\frac{1}{2}°$

$\frac{-45}{2}°$

$= \frac{-45}{2} × \frac{π}{180}$

$= \frac{-45π}{360}$

$= \frac{-π}{8} Radian$