If tanalpha+cotalpha=m then value of tan...

If `tanalpha+cotalpha=m` then value of `tan^4alpha+cot^4alpha` is

A

`(m^2-2)^2-2`

B

`m^4+4m^2-2`

C

`m^4-4m^2-2`

D

`m^4+4m^2+2`

लिखित उत्तर

Verified by Experts

The correct Answer is:

A

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