WAEC SSCE - General Mathematics - 2011 (Objective)

Question 1 Report

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

N 70^o W Correct answer

S 70^o W

N 20^o W

S 20^o E

Answer Details

If Esther was initially facing S 20° W and then turned 90° clockwise, she would end up facing in a new direction. To determine the new direction, we can add 90° to her initial direction. When we add 90° to S 20° W, we rotate the direction clockwise by 90°, which means the new direction will be to the right of the initial direction. To find the new direction, we need to subtract the initial angle from 90°: 90° - 20° = 70° Therefore, Esther is facing in the direction of N 70° W after turning 90° clockwise from her initial direction of S 20° W.






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