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If theta and phi are angles in first qua...

If `theta` and `phi` are angles in first quadrant and `tantheta=1/7` and `sinphi=1/sqrt10` then

A

`theta+2phi =90^(@)`

B

`theta + 2 phi =60^(@)`

C

`theta+ 2 phi =30^(@)`

D

`theta + 2 phi =45^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
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