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Choose the correct option and justify y...

Choose the correct option and justify your choice : (i) `(2tan30^@)/(1+tan^2 30^@)` `(a) sin 60^@ (b) cos 60^@ (c) t a n 60^@ (d) sin 30^@`

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Choose the correct option and justify your choice.:- (2tan30^@)/(1+tan^2 30^@) .

Choose the correct option and justify your choice.:- (2tan30^@)/(1-tan^2 30^@) .

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Choose the correct option and justify your choice :(i)(2tan30^(@))/(1+tan^(2)30^(@))(a)sin60^(@)(b)cos60^(@)(c)tan60^(@)(d)sin30^(@)

(2tan30^@)/(1-tan^2 30^@) is equal to (a) cos60^@ (b) sin60^@ (c) tan60^@ (d) sin30^@

(2 tan 30^(@))/( 1-tan ^(2) 30^(@)) = (a) cos 60 (b) sin 60 (c) tan 60 (d) sin 30

( 2tan 30 ^(@) )/( 1+tan ^(2) 45^(@) ) = (a) sin 60 (b) cos 60 (c) tan 30 (d) sin 30