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Need some help with this one

Need some help with this one-example-1
User Tafaust
by
6.4k points

1 Answer

4 votes

Answer:

17.5 ft

Explanation:

Given


Ladder = 18ft


\theta = 76

Required

The height which the ladder reaches on the wall

The question is illustrated with the attached image (solve for x).

Using sine formula, we have:


\sin(76) = (x)/(18) --- i.e. sin = opposite/hypotenuse

Make x the subject


x = 18 * \sin(76)


x = 18 * 0.9703


x = 17.4654

Approximate


x = 17.5

User Renato Mefi
by
6.6k points