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If sintheta=a/b, then costheta is equal ...

If sin`theta=a/b`, then `costheta` is equal to

A

`b/(sqrt(b^(2)-a^(2)))`

B

`b/a`

C

`(sqrt(b^(2)-a^(2)))/b`

D

`a/(sqrt(b^(2)-a^(2)))`

Text Solution

Verified by Experts

The correct Answer is:
C
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