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The values of alpha for which the equati...

The values of `alpha` for which the equation `"sin"^(4) x+ "cos"^(4)x + "sin"2x + alpha = 0` may be valid, are

A

`-(3)/(2) le alpha le 1`

B

`0 le alpha le (1)/(2)`

C

`-(3)/(2) le alpha le (1)/(2)`

D

none of these

Text Solution

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The correct Answer is:
C
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OBJECTIVE RD SHARMA-TRIGONOMETRIC EQUATIONS AND INEQUATIONS-Chapter Test
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  12. If "sin" (pi "cos" theta) = "cos" (pi "sin" theta), then which one fo ...

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