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What is the value of [1 - tan (90-theta)...

What is the value of `[1 - tan (90-theta) + sec (90 -theta)]//[tan (90 - theta)+ sec (90- theta) + 1]`?
`[1 - tan (90-theta) + sec (90 -theta)]//[tan (90 - theta)+ sec (90- theta) + 1]` का मान क्या है?

A

`cos( theta//2)`

B

`tan( theta//2)`

C

`sin theta`

D

`cos theta`

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