Question

if p,q&r are interior angles of a triangle PQR ,then show that sec(p+r/2)=cosec(r/2)

Answer 1

HELLO FRIEND...


HERE IS YOUR ANSWER...


Since, we know that, p + q + r = 180°
=> p + r = 180° - q
Now,
LHS = sec(p+r/2)
= sec(180°-q/2)
= sec (90°-q/2)
= cosec q/2 = RHS proved.

NOTE :- Your question is wrong. It should be cosec q/2.


# GUDIYA...


HOPE IT HELPS !! ☺☺☺

Answer 2

Answer:

here is your answer our questions are different but method is same