WAEC - Mathematics (2011 - No. 9)

Esther was facing S 20° W. She turned 90° in the clock wise direction. What direction is she facing?

N 70^o W

S 70^o W

N 20^o W

S 20^o E

The bearing S 20° W is equivalent to a bearing of 200°.

Moving clockwise 90° ⇒ 200° + 90°

= 290°

This is equivalent to N 70° W.