Let Y= SinxCos3x/CosxSin3x then Y may equal to 1/3 Y may equal to 3 Set of possible values of y is (-infinity ,1/3)U(3,infinity) Set of values of y is (-infinity,1/3]U(3,infinity)

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Saurabh Koranglekar · Answer

https://www.askiitians.com/forums/IIT-JEE-Entrance-Exam/show-that-the-value-of-tan-x-tan-3x-whereever-defi_108506.htm simplify a bit and follow the link

Deepak Kumar Shringi · Answer

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Let Y= SinxCos3x/CosxSin3x then Y may equal to 1/3 Y may equal to 3 Set of possible values of y is (-infinity ,1/3)U(3,infinity) Set of values of y is (-infinity,1/3]U(3,infinity)

Let Y= SinxCos3x/CosxSin3x then

Y may equal to 1/3

Y may equal to 3

Set of possible values of y is (-infinity ,1/3)U(3,infinity)

Set of values of y is (-infinity,1/3]U(3,infinity)

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Let Y= SinxCos3x/CosxSin3x then Y may equal to 1/3 Y may equal to 3 Set of possible values of y is (-infinity ,1/3)U(3,infinity) Set of values of y is (-infinity,1/3]U(3,infinity)

Let Y= SinxCos3x/CosxSin3x then Y may equal to 1/3 Y may equal to 3 Set of possible values of y is (-infinity ,1/3)U(3,infinity) Set of values of y is (-infinity,1/3]U(3,infinity)

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Let Y= SinxCos3x/CosxSin3x then

Y may equal to 1/3

Y may equal to 3

Set of possible values of y is (-infinity ,1/3)U(3,infinity)

Set of values of y is (-infinity,1/3]U(3,infinity)