If the equation 2cos^(2)x+cosx-a=0 has s...

If the equation `2cos^(2)x+cosx-a=0` has solutions, then a can be

A

`(-1)/(4)`

B

`(-1)/(8)`

C

`2`

D

`5`

Text Solution

Verified by Experts

The correct Answer is:

B, C

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