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If 4sin^4x+cos^4x=1,t h e nxi se q u a l...

If `4sin^4x+cos^4x=1,t h e nxi se q u a lto(n in Z)` `npi` (b) `npi+-sin^(-1)sqrt(2/5)` `(2npi)/3` (d) `2npi+-pi/4`

A

`npi`

B

`npipmsin^(-1)((2)/(5))`

C

`npi+(pi)/(6)`

D

`npi-(pi)/(6)`

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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS -Competitive Thinking
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  2. if 0<=x<=pi and 81^(sin^2x)+81^(cos^2x)=30 then x=

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  3. If 4sin^4x+cos^4x=1,t h e nxi se q u a lto(n in Z) npi (b) npi+-sin...

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  4. The root of the equation 1-costheta=sintheta*"sin"(theta)/(2) is

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  5. If the general solution of sin5x=cos2x is of the form an.pi/2 for n=0,...

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  6. General solution of tantheta=cot2theta is

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  7. Find the most general value of theta satisfyingn the equation tanthet...

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  8. If tantheta=-(1)/(sqrt(3)),sintheta=(1)/(2)andcostheta=-(sqrt(3))/(2),...

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  9. If cosptheta=cosqtheta, pneq, then

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  10. If (2cosx-1)(3+2cosx)=0, 0lexle2pi, then x=

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  11. If sin((pi)/(4)costheta)=cos((pi)/(4)tantheta), then theta is equal to

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  12. If tan2thetatantheta=1, then the general value of theta is

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  13. The general value theta obtained from the equation cos3theta=sinalpha ...

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  14. If sin 6 theta + sin 4 theta + sin 2 theta = 0 Then the general valu...

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  15. If sin5x+sin3x+sinx=0 ,then the value of x other than 0 lying between ...

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  16. sinx+sin3x+sin5x=0

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  17. The number of solutions of the equation sinx-sin2x+sin3x=2cos^(2)x-cos...

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  18. The value of x in (0,(pi)/(2)) satisfying the equation sin x cos x =(1...

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  19. If sintheta= costheta=1, then find the general value of theta.

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  20. sqrt(2)sectheta+tantheta=1

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