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Question: Prove that tan 70 o = tan 20 o + 2 tan 50 o . Answer: ..
Question: Prove that tan 70 o = tan 20 o + 2 tan 50 o . Answer: ..
..1st Method:
(data) AB = BC = x We can draw another triangle ABD with BD = x + 10 and AB = x. x = 5.774 + 0.5774 x 0.4226x = 5.774 = 13.7 m height of the tower = 13.7 m. 2 n d Method (By formula ): In proved. ..
(data) AB = BC = x We can draw another triangle ABD with BD = x + 10 and AB = x. x = 5.774 + 0.5774 x 0.4226x = 5.774 = 13.7 m height of the tower = 13.7 m. 2 n d Method (By formula ): In proved. ..Introduction
The height of a building or the width of a river can be measured without climbing or crossing it. In this chapter we will show how it is made possible. Some suitable angles and distances will be measured to achieve the above resul..
Heights and Distances
Angle of elevation is the angle between a horizontal line and the line joining the observer's eye to some object above the horizontal line. Angle of depression is the angle between a horizontal line and the line joining the observer's eye to some object beneath the horizontal lin..
Summary
The angle elevation and the angle of depressions are the angles which the line of sight makes with the horizontal. The angle of elevation of A as observed from C equals the angle of depression of C as observed from ..
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