Given tan theta =(7)/(8) , then evaluate...

Given `tan theta =(7)/(8) ,` then evaluate (i) ` ((1+sin theta )( 1-sin theta ))/( (1+cos theta )(1-cos theta )) `

A

`frac(49)(69)`

B

`frac(64)(49)`

C

`frac(50)(51)`

D

`frac(48)(53)`

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