A ladder is leaning against a vertical wall

MATHEMATICS · Multi-part · CBSE · Mathematics · Introduction to Trigonometry · Introduction to Trigonometry

Problem

A ladder is leaning against a vertical wall. The foot of the ladder is 4 m4\ \text{m} away from the wall and the ladder makes an angle of 70∘70^\circ with the horizontal ground. (i) Find the length of the ladder, correct to one decimal place. (ii) How high up the wall does the ladder reach? Give your answer correct to one decimal place.

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