sinA tanA /1-cosA =1 +sec A
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Step-by-step explanation:
Sina.tana/1-cosa
=(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
=seca+1
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