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Question

If tan2A=cot(A18), then value of A is ((A - 18) & 2A are acute angle)



Your Answer
A

 

Correct Answer
B

 

Your Answer
C

 

Your Answer
D

 


Solution

The correct option is B

 


Given, tan2A=cot(A18)

tan2A=tan(90(A18)

tan2A=tan(108A)

2A=108A

 3A=108

 A=36 

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