(1 - cos A) (1 + sec A) = tan A sin A.
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sinA*sinA/cosA) /(1-cosA)
sin^2A/(cosA (1-cosA ))
(1-cos^2A)/ (cosA (1-cosA))
(1+cosA)(1-cosA) / (cosA (1-cosA))
(1+cosA)/cosA
(1/cosA)+(cosA/cosA)
secA+1
1+secA proved
please mark as BRAINliest answer
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Step-by-step explanation:
(1-cosA)(1+secA)
(1-cosA)(1+1/cosA)
(1-cosA)(cosA+1/cosA)
(1-cosA)(1+cosA)/cosA
1-cos^2A/cosA
sin^2A/cosA
sinA×sinA/cosA
sinA.tanA
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