A ladder 16m long leans against an electric pole. If the ladder makes an angle...
MATHEMATICS
WAEC 2006
A ladder 16m long leans against an electric pole. If the ladder makes an angle of 65° with the ground, how far up the electric pole does its top reach
- A. 6.8m
- B. 14.5m
- C. 17.7m
- D. 34.3m
Correct Answer: B. 14.5m
Explanation
Sin 65o = \(\frac{x}{16}\)
x = 16x sin 65
= 16 x 0.9063
x = 14.5m
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