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Choose the correct option and justify your choice : (i) `(2tan30o)/(1+tan^2 30o)=` `(a)"\ "s in"\ "60o\ (b)"\ "cos"\ "60o\ (c)"\ "t a n"\ "60o\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (d)"\ "s in"\ "30o` (ii) `(1-tan^2 45o)/(1+tan^2 45o)=` `(a)"\ "t a

A

`sin 60^@`

B

`cos 60^@`

C

`tan 60^@`

D

`sin 30^@`

Text Solution

Verified by Experts

The correct Answer is:
A
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