(2tan30)/(1+tan^(2)30^(@))=-

((2 tan 30^@)/(1-tan^2 30^@)) =?

find the value of (2 tan 30^(@))/(1-tan^(2)30^(@))

Verify that sin60^(@)=(2tan 30^(@))/(1+tan^(2)30^(@))

Verify that: sin60o=(2tan30o)/(1+tan^(2)30o)=(sqrt(3))/(2) (ii) cos60o=(1-tan^(2)30o)/(1+tan^(2)30o)=(1)/(2)

Prove that : cos(2 times 30^(@))=(1-tan^(2)30^(@))/(1+tan^(2)30^(@))

Prove that : cos(2 times 30^(@))=(1-tan^(2)30^(@))/(1+tan^(2)30^(@))

Verify that cos 60^(@)=(1-tan^(2)30^(@))/(1+tan^(2)30^(@))

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

(2 tan 30^(@))/(1 + tan^(2)30^(@)) =