Question

What part of a revolution does a boy turn through if he is facing “ West and turns clockwise, to face North "?

Answer 1

From West to North, He has to make $\frac{1}{4}$ of the revolution.

Note :

$1$revolution $=$$360°$.

$\frac{1}{4}$revolution $=\frac{1}{4}x360°$

$=$$90°$. ( on dividing $360°$ by $4$ we get $90°$)