If $\tan \theta=\frac{3}{4},$ then $\cos ^{2} \theta-\sin ^{2} \theta= – InterviewSolution

1.	If $\tan \theta=\frac{3}{4},$ then $\cos ^{2} \theta-\sin ^{2} \theta=$(a) 7/25(b) 1(c) -7/25(d) 4/25
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