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If 0lt theta ltpi and 81^(sin^(2))+81^(c...

If `0lt theta ltpi and 81^(sin^(2))+81^(cos^(2)theta)=30`, then `theta` is

A

`30^(@)`

B

`60^(@)`

C

`120^(@)`

D

`150^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D
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