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A ladder 15 m long just …

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A ladder 15 m long just reacher the top of a wall. If the ladder makes an angle of 60° with the wall ,find the height of the wall.

Posted by Krish Patel 7 years, 4 months ago

CBSE > Class 10 > Mathematics

1 answers

Devansh Gupta 7 years, 4 months ago

Let ladder be hypoteneuse Height of wall be perpendicular Now H = 15m angle = 60° SinQ=p/H Sin60°=p/15 Root3/2=p/15 Root3×15=p×2 P=15root3/2 Hence height be 15×1.732/2 m (root3=1.732) =15×.866 = 12.990m

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