Question

26. Prove
sin teeta/
1+ cos teeta +
1+ cos teeta/
sin teeta
= 2 cosec teeta​

Answer 1

Step-by-step explanation:

sinA/1+cosA+1+cosA/sinA

=sin²A+(1+cosA)²/sinA(1+cosA)

=sin²A+1+2cosA+cos²A/sinA(1+cosA)

=2(1+cosA)/sinA(1+cosA)

=2/sinA

=2cosecA