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13 standing on the top of a tower 20 meter height, saw the top of a building at an elevation of \( 50 ^ { \circ } \) and its base depression of \( 30 ^ { \circ } \) (a) Draw a rough figure according to the given data, (b) Find the distance between the top of the tower to the base of the building (c) Find the distance from the top of the tower to the base of the building ( \( \left. \text { (c) } \sin 50 ^ { \circ } \Rightarrow 0.77 , \cos 50 ^ { \circ } = 0.64 , \text { tan } 50 ^ { \circ } = 1.2 , \sqrt { 3 } = 1.7 \right] \)

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Q1
Hari, standing on the top of a building, sees the top of a tower at an angle of elevation of 50∘ and the foot of the tower at an angle of depression of 20∘. Height of Hari is 1.6 metre and height of the building on which he is standing is 9.2 metre.
(a) Draw a rough sketch according to the given information.
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sin20∘=0.34,cos20∘=0.94,tan20∘=0.36,
sin50∘=0.77,cos50∘=0.64,tan50∘=1.19.
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