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<div><strong>The length of shadow of a tower on the plane ground is root3 times the height of the tower.</strong></div> <div>&nbsp;</div> <div><strong>So the angle of elevation of sun is :</strong></div> <div><ol> <li>30</li> <li>45</li> <li>60</li> <li>90</li> </ol> <p>&nbsp;<strong> Explain this question with a diagram. &nbsp;( where is actually the&nbsp;</strong><strong>angle of elevation of the sun)&nbsp;</strong></p> </div>
Asked by godson babuji | 11 Mar, 2015, 12:01: AM
Expert Answer
C o n s i d e r space t h e space f o l l o w i n g space f i g u r e.
G i v e n space t h a t space t h e space l e n g t h space o f space s h a d o w space o f space t h e space t o w e r space o n space t h e space p l a n e space g r o u n d space i s square root of 3 space t i m e s space t h e space h e i g h t space o f space t h e space t o w e r. L e t space theta space b e space t h e space a n g l e space o f space e l e v a t i o n. F r o m space t h e space g i v e n space s t a t e m e n t comma space B C equals square root of 3 cross times A B rightwards double arrow fraction numerator B C over denominator A B end fraction equals square root of 3 rightwards double arrow fraction numerator B C over denominator h end fraction equals c o t theta rightwards double arrow c o t theta equals fraction numerator B C over denominator h end fraction equals square root of 3 rightwards double arrow c o t theta equals c o t 30 degree rightwards double arrow theta equals 30 degree T h u s space t h e space c o o r e c t space a n s w e r space i s space o p t i o n space left parenthesis 1 right parenthesis.
Answered by Vimala Ramamurthy | 11 Mar, 2015, 11:55: AM
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