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The value of k if the equation `2 cos x + cos 2kx=3` has only one solution is

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CENGAGE ENGLISH-TRIGONOMETRIC FUNCTIONS-All Questions
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  2. If sintheta,tantheta,costheta are in G.P. then 4sin^2theta-3sin^4thet...

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  3. The value of k if the equation 2 cos x + cos 2kx=3 has only one soluti...

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  4. If I1, I2, I3 are the centers of escribed circles of triangle A B C ,...

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  8. The value of 3(sin^4t+cos^4t-1)/(sin^6t+cos^6t-1) is equal to

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  9. Number of roots of the equation 2^(tan(x-pi/4))-2(0. 25)^((sin^2(x-pi...

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  10. If sintheta-costheta=1, then the value of sin^3theta-cos^3theta is

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  13. In convex quadrilateral A B C D ,A B=a ,B C=b ,C D=c ,D A=d . This qua...

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  14. Suppose that for some angles xa n dy , the equations sin^2x+cos^2y=(3a...

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