A) 1
B) 2
C) 0
D) None of these
Correct Answer: A
Solution :
As, \[\sin x+si{{n}^{2}}x=1\] \[\sin x=1-{{\sin }^{2}}x={{\cos }^{2}}x\] \[\therefore \]\[{{\cos }^{2}}x+{{\cos }^{4}}x=\sin x+{{\sin }^{2}}x=1\]You need to login to perform this action.
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