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If alpha gt (1)/(sin^(6)x+cos^(6)x) AA ...

If `alpha gt (1)/(sin^(6)x+cos^(6)x) AA x in R`, then `alpha` can be

A

3

B

4

C

5

D

6

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The correct Answer is:
C, D
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VK JAISWAL ENGLISH-COMPOUND ANGLES-Exercise-2 : One or More than One Answer is/are Correct
  1. If sin(x+20^0)=2sinxcos40^0,w h r ex in (0,pi/2), then which of the fo...

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  2. If cosx + cosy + cosz = 0 and sinx + siny + sinz =0, then show that ...

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  3. If 0 lt x lt pi/2 and sin^(n) x + cos^(n) x ge 1, then

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  4. If x=sin(alpha-beta)*sin(gamma-delta), y=sin(beta-gamma)*sin(alpha-de...

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  5. If X=x cos theta-y sin theta, Y=x sin theta+y cos theta and X^(2)+4XY...

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  6. If 2a=2tan10^(@)+tan50^(@), 2b=tan20^(@)+tan50^(@) 2c=2tan10^(@)+tan...

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  7. Which of the following real numbers when simplified are neither termi...

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  8. If alpha=sin x cos^(3) x and beta=cos x sin^(3) x, then :

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  9. If (pi)/(2) lt theta lt pi, then possible answers of sqrt(2+sqrt(2+2c...

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  10. If cot^(3)alpha+cot^(2)alpha+cot alpha=1 then which of the following...

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  11. The value of x in (0,pi/2) satisfying (sqrt(3)-1)/(sinx)+(sqrt(3)+1)/(...

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  12. If alpha gt (1)/(sin^(6)x+cos^(6)x) AA x in R, then alpha can be

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  13. If x in (0, (pi)/(2)) and sinx=(3)/(sqrt(10)), Let k=log(10)sinx+log...

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  14. If A, B, C are angles of a triangle ABC and tanAtanC=3, tan B tanC=6 t...

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  15. The value of (sin x-cos x)/(sin^(3)x) is equal to :

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  16. If f(x)=sin^(2)x+sin^(2)(x+(2pi)/(3))+sin^(2)(x+(4pi)/(3)) then :

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  17. The range of y=(sin4x-sin2x)/(sin4x+sin2x) satisfies

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  18. If sqrt(2)cos A=cos B+cos^3B ,a n dsqrt(2)sinA=sinB-sin^3Bt h e nsin(A...

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  19. If alpha gt (1)/(sin^(6)x+cos^(6)x) AA x in R, then alpha can be

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  20. If cot^(3)alpha+cot^(2)alpha+cot alpha=1 then which of the following...

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