A ladder 16m long leans against an electric pole. If the ladder makes an angle...

WAEC 2006

A ladder 16m long leans against an electric pole. If the ladder makes an angle of 65^o 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

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Correct Answer: Option B

Explanation

Sin 65^o = \(\frac{x}{16}\)

x = 16x sin 65

= 16 x 0.9063

x = 14.5m

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A ladder 16m long leans against an electric pole. If the ladder makes an angle...

Correct Answer: Option B

Explanation

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