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If 4\ cos^2theta+sqrt(3)=2(sqrt(3)+1)cos...

If `4\ cos^2theta+sqrt(3)=2(sqrt(3)+1)costheta,` then `theta` is (a) `2npi+-pi/3, n in I` (b) `2npi+-pi/4, n in I` (c) `2npi+-\ pi/6, n in I` (d) none of these

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ALLEN-TRIGONOMETRIC EQUATION-All Questions
  1. The most general value for which tantheta=-1costheta=1/(sqrt(2))i s(n ...

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  2. If cos^2x+cos^2 2x+cos^2 3x=1 then (a) x=(2n+1)pi/4,\ n in I (b) x=(2...

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  3. If 4\ cos^2theta+sqrt(3)=2(sqrt(3)+1)costheta, then theta is (a) 2npi+...

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  4. Set of values of 'alpha' in [0,\ 2pi] for which m=(log)(("x"+1/"x"))(2...

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  5. (a+2)sinalpha+(2a-1)cosalpha=(2a+1)iftanalpha"i s" 3/4 (b) 4/3 (c) ...

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  6. The number of solution(s) of the equation cos2theta=(sqrt(2)+1)(cos...

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  7. The value(s) of theta , which satisfy 3-2\ costheta-4sintheta-cos2thet...

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  8. Given that A ,\ B are positive acute angles and sqrt(3)\ sin2A=sin2B...

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  9. The value(s) of theta, which satisfy the equation : 2cos^3 3thetath...

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  10. The solution(s) of the equation sin7x+cos2x=-2 is/are x=(2kpi)/7+(3...

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  11. n|sinx|= m |cos| in [0, 2pi] where n > m and are positive integers

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  12. 2^1|cosx|+|cosx|^(2 dotx)=4\ \ in\ (-pi,pi)

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  13. Statement - I : For any real value of theta!=(2n+1)pior\ (2n++1)pi/...

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  14. Statement - I : The equation sqrt(3)cosx-sinx=2 has exactly one ...

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  15. Statement - I : General solution of (tan4x-tan2x)/(1+tan4xtan2x)=1\...

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  16. Statement - I :The equation sin(cos x) has no real solution. Becaus...

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  17. If sinA=s in Ba n dcosA=cosB , then find the value of A in terms of Bd...

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  18. Solve the equation: 1 + 2 cosecx = -(sec^2 (x/2))/2

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  19. Solve: sin3alpha=4sinalphasin(x+alpha)sin(x-alpha),w h e r ealpha!=npi...

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  20. Solve the inequality : tan^2x-(sqrt(3)+1)\ t a n x+sqrt(3)<0

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