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If cos ^(-1)\ (x)/(a) + cos^(-1)\ (y)/(b...

If `cos ^(-1)\ (x)/(a) + cos^(-1)\ (y)/(b) = theta`, then `(x^(2))/(a^(2)) +(y^(2))/(b^(2))=?`

A

`(xy)/(ab) cos theta + cos^(2) theta`

B

`(2xy)/(ab) cos theta + cos^(2) theta`

C

`(2xy)/(ab) cos theta + sin^(2) theta`

D

`(xy)/(ab) cos theta + sin^(2) theta`

Text Solution

Verified by Experts

The correct Answer is:
C
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