Question

sin A/(1 + cosA) is equal to

Answer 1

Step-by-step explanation:

sinA*(1-cosA)/(1+cosA)*(1-cosA)

now open all the brackets and we get

sinA-sinA.cosA/1-cos^2A

we can further simplify it as

sinA-sinAcosA/sin^2A

using identity(1-cos^2A=sin^2A)

now just divide both the terms by sin^2A

we get (1/sinA)-(cosA/sinA)

which we can write as cosecA-cotA

and that’s the answer

I Hope it helps u

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