1. A man is climbing a ladder which is inclined to the wall at an angle of 30°. If he ascends at a rate of 2 m/s, then he approaches the wall at the rate of
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- By: anil on 05 May 2019 01.50 am
Let BC = x and AC = y $$ herefore sin 30 = frac{BC}{AC}$$ => $$frac{1}{2} = frac{x}{y}$$ => $$y = 2x$$ After 1 second, required speed, $$x = frac{y}{2}$$ = $$frac{2}{2} = 1$$ m/s
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