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