Tan^(-1)(tan15^(@))^(2)=?

What is the value of (1+tan15^(@))/(1-tan15^(@)) ?

The expression ((1+tan37^(@))(1+tan8^(@))(1+tan15^(@))(1+tan30^(@)))/((1+tan2^(@))(1+tan43^(@))) reduces to

tan15^(@)-cot15^(@)=

The value of (1-tan^(2)(15^(@)))/(1+tan^(2)(15^(@))) is ………..

The value of (1-tan^(2)15^(@))/(1+tan^(2)15^(@)) is (A) 1(B)sqrt(3)(C)(sqrt(3))/(2)(D)2

The value of (1-tan^(2)15^(@))/(1+tan^(2)15^(@))=(A)1(B)sqrt(3) (C) (sqrt(3))/(2)(D)2

Prove that, tan25^(@).tan15^(@)+tan15^(@)tan50^(@)+tan25^(@)tan50^(@)=1 .

The value of tan^(6)(15^(@))-15tan^(4)(15^(@))+15tan^(2)(15^(@))-3

The value of tan10^(@)tan15^(@)tan75^(@)tan80^(@) is

Evaluate : sin^(2)25^(@)+sin^(2)65^(@)+sqrt(3)tan5^(@)tan15^(@)tan30^(@)tan75^(@)tan85^(@)