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(2sec30^(@))/(1+tan^(2)30^(@))=...

(2sec30^(@))/(1+tan^(2)30^(@))=

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If (x-xtan^(2)30^(@))/(1+tan^(2)30^(@))=sin^(2)30^(@)+4cot^(2)45^(@)-sec^(2)60^(@) , then the value of x is :

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

Value of (2tan30^(@))/(1+ tan^(2)30^(@))

Prove that : tan(2 times 30^(@))=(2tan30^(@))/(1-tan^(2)30^(@))

Prove that : tan(2 times 30^(@))=(2tan30^(@))/(1-tan^(2)30^(@))

Prove that : sin(2 times 30^(@))=(2tan30^(@))/(1+tan^(2)30^(@))

Prove that : sin(2 times 30^(@))=(2tan30^(@))/(1+tan^(2)30^(@))

Calculate : sec^(2)60^(@)-cot^(2)30^(@)-(2tan30^(@)"cosec"60^(@))/(1+tan^(2)30^(@)) .