Question

(sec A+ tan A) (1 - sin A) GRTOT
$(seca + tana)(1 - sina)$
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Answer 1

Step-by-step explanation:

(sec A+tan A)(1-sinA)

=(1/cos A + sin A/cos A)(1-sinA)

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

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

=(1-sin^2 A)/cosA

=(cos^2 A)/cos A

=cos A

Hence proved