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If "Cos"^(-1)x/a+"Cos"^(-1)y/b=(5pi)/12 ...

If `"Cos"^(-1)x/a+"Cos"^(-1)y/b=(5pi)/12` and `"Sin"^(-1)x/a-"Sin"^(-1)y/b=(pi)/12` then `(x^(2))/(a^(2))+(y^(2))/(b^(2))=`

A

1

B

`1/4`

C

`3/4`

D

`5/4`

Text Solution

Verified by Experts

The correct Answer is:
D
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