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Solve 2sin^(2)x+sin^(2)2x=2...

Solve `2sin^(2)x+sin^(2)2x=2`

A

`n pi +(pi)/2, n in Z`

B

`2n pi +-(pi)/3, n inZ`

C

`n pi+(-1)^(n)(pi)/6, n inZ`

D

`2npi+-(pi)/6, n in Z`

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The correct Answer is:
A
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AAKASH SERIES-TRIGNOMETRIC EQUATIONS-PRACTICE SHEET (EXERCISE -I LEVEL -I STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  3. Solve 2sin^(2)x+sin^(2)2x=2

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  5. If 4 cot 2 theta=cot^(2)theta-tan^(2)theta then theta=

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  6. The solution of 4 sin^(2) x + tan^(2) x + cosec^(2) x + cot^(2) x - 6 ...

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  12. The number of solutions of the equation cos^(2)(pi)/3 cos x-(8pi)/3=1 ...

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  13. The number of roots of the equation 2 sin^(2)theta + 3 sin theta + 1 =...

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  14. The number of values of x in the interval [0, 5 pi] satisfying the equ...

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  15. If 5 cos 2 theta + 2 cos ^(2) ""(theta)/(2) + 1 = 0 , - pi lt theta l...

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  16. If theta in [0, 5 pi] and r in R such that 2 sin theta = r^(4) - 2 r^...

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  18. The number of roots fo the equation tan(x+(pi)/6)=2tann x for x in (0,...

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