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Q.17. If SinA+Sin^2 A=1 the (Cos^2 A +Cos^4 A) is equal to ? *

Answer»

Step-by-step EXPLANATION:

Here

{ \sin(a) }^{2}  +  { \sin(a)} < br > sin \: a =  { \cos(a) }^{2}

Sin^2 A=Cos^4 A

Putting this VALUE in equation

Cos^2A+Cos^4A=SinA+Sin^2A

=1



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