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Q.

Find the value of tan(3x)cot(3x) if it is defined.


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a

-1

b

33

c

1

d

tan33x  

answer is C.

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Detailed Solution

Given expression is tan3xcot3x.
We know that, cotθ=1tanθ.
The value of tan(3x)cot(3x) is,
=tantan 3x ×1tantan 3x 
=1
Hence, the correct option is (3).
 
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