Prove that underoot 1 + cos thetha by underoot 1- cos thetha + underoot 1 - cos thetha by underoot 1+ cos thetha =2 cosec thetha
Answers
Answered by
0
Step-by-step explanation:
√1+cosA/√1-cosA + √1-cosA/√1+cosA
=(√1+cosA)²+(√1-cosA)²/√1-cos²A
=(1+cosA+1-cosA)/sinA
=2/sinA
=2cosec²A
Similar questions