Question

value of tan 15degree

Answer 1

value of tan 15 degree is (√3-1 ) / (√3 + 1 )
hope it will help.
thanks

Answer 2

tan 15 =

tan (45-30) =

tan(A-B) = tanA -tanB/1+tanA.tanB

and then putting the values of a and b we get,

tan 15 = root3-1/root 3+1.

I hope you will understand.more clear in pic.