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IF tanA+cotA=5, then tan^4 A+cot^4 A is ...

IF tanA+cotA=5, then `tan^4 A+cot^4 A` is equal

A

(a) `520`

B

(b) `521`

C

(c) `529`

D

(d) `527`

Text Solution

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The correct Answer is:
D
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