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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 ENGLISH-COMPOUND ANGLES-Exercise-2 : One or More than One Answer is/are Correct
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