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If the equation cot^4x-2cos e c^2x+a^2=0...

If the equation `cot^4x-2cos e c^2x+a^2=0` has at least one solution, then the sum of all possible integral values of `a` is equal to 4 (b) 3 (c) 2 (d) 0

A

-1

B

0

C

1

D

2

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VK JAISWAL-COMPOUND ANGLES-Exercise-2 : One or More than One Answer is/are Correct
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  2. If the equation cot^4x-2cos e c^2x+a^2=0 has at least one solution, th...

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  3. Which of the following is/are true ?

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  4. Which of the following is/are +ve ?

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  6. If 3sinbeta=sin(2alpha+beta) then

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  7. If sin(x+20^0)=2sinxcos40^0,w h r ex in (0,pi/2), then which of the fo...

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

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

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

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  11. If x = X cos theta- Y sin theta, y = X sin theta + Y cos theta and x^2...

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

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

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

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

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

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

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

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

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  20. If A, B, C are angles of Delta ABC and tan A tan C = 3, tan B tan C =...

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