Simplify Sec A (1- Sin A) (Sec A + tan A)
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Answer:
L.H.S=
= 1/cosA. ×. (1-sinA). ×. (1/cosA+sinA/cosA)
= (1-sinA)/cosA. × (1+sinA/cosA)
=. (1-sin²A/cos²A)
=. cos²A/cos²A
=. 1
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