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Question
(sec A + tan A)(1 – sin A) = ?
Options
sin A
cos A
sec A
cosec А
MCQ
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Solution
cos A
Explanation:
Given expression = `(1/(cos A) + (sin A)/(cos A))(1 - sin A)`
= `((1 + sin A)(1 - sin A))/(cos A)`
= `((1 - sin^2A))/(cos A)`
= `(cos^2A)/(cos A)`
= cos A
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