Question

(i) (sec A + tan A) (1 - sin A) = cos A
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Answer 1

Answer:

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

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

=(cosA/cosA)=1

(using (a+b)(a-b)=a^2-b*2

and 1-sin^2 =cos^2

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