1.

Statement- I : Periodof cos^(3) x + cos^(3) (120^(0)- x)+ cos^(3) (120^(0)+ x )is (pi)/(3) Statement-II : Periodofcos((2pi x)/ 3 ) + sin((pix)/2) - tan ((pi x )/ 4)is12 Whichof the abovestatementis correct.

Answer»

only I
only II
bothI & II
NEITHERI nor II

Answer :2


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