Question

tan(2*30°)=(2tan30°)/(1-tan^2 30°)​​

Answer 1

Answer:

LHS=tan(2×30)=tan60= √3

RHS=2tan30/1-(tan^2)30

=(2×1/√3)/(1-1/3)

=(2/√3)/(2/3)

=[√3]/[√3]

=√3

RHS= √3

∴RHS=LHS

∴tan(60)= 2tan30/1-(tan^2)30