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A slope is built against a wall which makes an angle 30° with the ground and the height of the wall is 2 meters. Find the length of the slope in meters.(a) 2(b) 4(c) 1(d) 3I had been asked this question in exam.This is a very interesting question from Trigonometry Application topic in section Trigonometry Application of Mathematics – Class 10

Answer»

Correct CHOICE is (B) 4

Easiest explanation: AC is the length of the slope in ∆ABC.

sin 30° = \(\frac {AB}{AC}\)

\( \frac {1}{2} = \frac {2}{AC}\)

AC = 4 meters



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