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If t a n A+cot A=4, then tan^4A+cot^4A i...

If `t a n A+cot A=4,` then `tan^4A+cot^4A` is equal to............ a. `110` b. `191` c. `80` d. `194`

A

110

B

191

C

80

D

194

Text Solution

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The correct Answer is:
D
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