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The set of values of x for which (tan5...

The set of values of x for which
`(tan5x-tan4x)/(1+tan5xtan4x)=1` is

A

`phi`

B

`{pi//4}`

C

`{npi+(pi)/(4),ninz}`

D

`{2npi+(pi)/(4),ninz}`

Text Solution

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The correct Answer is:
A
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AAKASH SERIES-TRIGONOMETRIC EQUATIONS-Exercise-II
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