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If sin alpha -cos alpha = m, then the va...

If `sin alpha -cos alpha = m`, then the value of `sin^6alpha+cos^6alpha` in terms of m is

A

`(4-3(m^(2)-1)^(2))/(4)`

B

`(4+3(m^(2)-1)^(2))/(4)`

C

`(3+4(m^(2)-1)^(2))/(4)`

D

none of these

Text Solution

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The correct Answer is:
A
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