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The angle of elevation of a cloud from a...

The angle of elevation of a cloud from a point h metre above a lake is `theta` . The angle depression of its reflection in the lake is `45^0dot` The height of the cloud is `htan(45^0+theta)` (b) `hcot(45^0+theta)` `htan(45^0-theta)` (d) `hcot(45^0+theta)`

A

`(h(1+tan theta))/((1-tan theta))`

B

`(h(1-tan theta))/(1+tan theta)`

C

`htan(45^@-theta)`

D

None of these

Text Solution

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The correct Answer is:
A
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