Question

if p,q,r are interior angles of triangle pqr,then tan[(p+q)/2]

Answer 1

Hi ,

It is given that ,

P, Q , R are interior angles of ∆ PQR .

we know that ,

<P + <Q + <R = 180°

( P + Q + R )/2 = 90°

( P + Q )/2 = ( 90 - R/2 )

tan ( P + Q )/2 = tan ( 90 - R/2 )

= cot R/2

I hope this helps you.

: )

Answer 2

Here is your answer...