is equal to:

△ABC is right-angle triangle at B and tan A = , then sin A + sin B + sin C will be equal to:

 if and then the value of A and B are

In △ABC, right angle at B, if   , then the value of is :

Find the value of tan 27⁰ tan34⁰ + tan34⁰ tan29⁰ + tan29⁰ tan27⁰.

cosA(sec A – cosA)(cotA+tanA)=?

Find the exact value of cos 120⁰.

If 4sin²θ=3(1+cosθ),0⁰<θ<90⁰, then what is the value of (2tanθ+4sinθ-secθ)?