CBSE Class 10 Answered
1.If the angle of elevation of the a cloud from a point h meter above the lake is alpha and the depression of its reflection in the lake is beta , prove that the height of the cloud is h{1+r/1-r}m , where r=tan alpha/tan beta .
Asked by tanishqa.rathod | 16 Dec, 2015, 04:32: PM
Expert Answer
Answered by Vimala Ramamurthy | 17 Dec, 2015, 09:30: AM
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