cos^2 A + cos^2A cot^2A =cot^2A
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cos^2A(1+cot^2A)=cos^2A(tan^2A+1)/tan^2A
cos^2A(sec^2A)*cos^2A/sin^2A
cot^2A
proved
cos^2A(sec^2A)*cos^2A/sin^2A
cot^2A
proved
angle7poudelpe2kul:
thanks
Answered by
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