The number of solution of equation \[6\cos 2\theta +2{{\cos }^{2}}(\theta /2)+2si{{n}^{2}}\theta =0,\]\[-\pi

The number of solution of equation \[6\cos 2\theta +2{{\cos }^{2}}(\th

1.	The number of solution of equation \[6\cos 2\theta +2{{\cos }^{2}}(\theta /2)+2si{{n}^{2}}\theta =0,\]\[-\pi
A.	3
B.	4
C.	5
D.	6
Answer» B. 4

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The number of solution of equation \[6\cos 2\theta +2{{\cos }^{2}}(\theta /2)+2si{{n}^{2}}\theta =0,\]\[-\pi

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