prove that cos theta upon sec theta minus tan theta is equal to one plus sin theta
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Step-by-step explanation:
cos A/ secA-tanA= cosA / (1/cosA) -(sinA/cosA)
= cos^2A / 1-sinA
= 1-sin^2A / 1-sinA
= (1+sinA)(1-sinA)/(1-sinA)
=1+sinA
hence proved.
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