If tan4A = cot(A-20^@),0^@ < theta< 90^@...

If `tan4A = cot(A-20^@),0^@ < theta< 90^@`, then the value of A is:

A

`5^(@)`

B

`80^(@)`

C

`22^(@)`

D

`14^(@)`

Verified by Experts

The correct Answer is:

C

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