Question

prove that cos theta upon 1 minus sin theta is equal to sec theta + tan theta​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

cosA/1-sinA= secA+tanA

L.H.S

cosA/1-sinA

rationalise

cosA/1-sinA*1+sinA/1+sinA

cosA(1+sinA)/1-sin^2A

cosA(1+sinA)/cos^2A

1+sinA/cosA

1/cos A+sinA/cosA

secA+tanA. hence proved

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