Question

prove that 1-cosA/sinA = sinA/1+cosA

Answer 1

1-cosA/sinA=sinA/1+cosA
cross multiplication
sni^2A=(1-cosA)(1+cosA)
sin^2A=1-cos^2A

Answer 2

Answer:

hi friend !

Step-by-step explanation:

we know that ,

sin²A + cos²A = 1

⇒sin²A =1 -cos²A

there is a formula that a²-b² = (a-b) × (a+b)

from the formula we can write that ,

⇒( 1- cos A ) × (1+cos A ) = sin A× sin A

by bringing  one of the terms to the either side ,

⇒(1-cos A )÷ sin A = sin A ÷ (1 + cos A )

hence proved

hope it helps you

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