Question

Find the degree measure corresponding to the following radian measure.

−3

Answer 1

We know that, one radian = `180^circ/pi`

`- 3 = 180^circ/pi xx - 3`

`= (180 xx - 3)/(22/7)`

`= (- 180 xx 3 xx 7)/22`

`= (-90 xx 3 xx 7)/11`

= −171.81°

= −171°48′       ...[∵ 0.8° = (0.8 × 60)’ = 48′]