Prove that cos theta/1+son theta = 1-sin theta/cos theta
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Step-by-step explanation:
multiplying LHS by (1- sin A). #A=theta
cosA (1 - sinA) / (1+sinA)(1-sinA)
= cosA(1-sinA) / 1^2 - sin^2A
= cosA(1-sinA) / 1 - sin^2A
= cosA(1-sinA) / cos^2A
since, 1 - sin^2A = Cos^2A
= 1 - sinA / cosA
= RHS
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