CBSE BOARD X, asked by hemudevdas2566, 1 year ago

If tanA =tanB and sinA =sinB,then prove that cos2A=m2-1/n2-1

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Answered by ayushgupta113

3

Hey dear i hope u understand....

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Answered by raunaksomanpatfxx

0

Please note : cos^2 B =1-sin^2 B

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