Esther was facing S 20° W. She turned 90° in the clock wise direction. What...
MATHEMATICS
WAEC 2011
Esther was facing S 20° W. She turned 90° in the clock wise direction. What direction is she facing?
- A. N 70° W
- B. S 70° W
- C. N 20° W
- D. S 20° E
Correct Answer: A. N 70° W
Explanation
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.
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