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The equation sin^6x+cos^6x=a^2 has real ...

The equation `sin^6x+cos^6x=a^2` has real solutions if

A

`a in (-1, 1)`

B

`a in (-1, 1//2)`

C

`a in ((-1)/(2), (1)/(2))`

D

None of these

Text Solution

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The correct Answer is:
D
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