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If sin 4 A - cos 2A = cos 4A - sin 2A, ...

If ` sin 4 A - cos 2A = cos 4A - sin 2A, (0 lt A lt (pi)/(4))` then the value of `tan 4A` is

A

1

B

`(1)/(sqrt(3))`

C

`(sqrt(3))`

D

`(sqrt(3)-1)/(sqrt(3)+1)`

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The correct Answer is:
To solve the equation \( \sin 4A - \cos 2A = \cos 4A - \sin 2A \) for the value of \( \tan 4A \), we can follow these steps: ### Step 1: Rearranging the Equation Starting with the given equation: \[ \sin 4A - \cos 2A = \cos 4A - \sin 2A \] We can rearrange it to: \[ \sin 4A + \sin 2A = \cos 4A + \cos 2A \]
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LUCENT PUBLICATION-ADVANCED TRIGONOMETRIC IDENTITIES-EXERCISE 13A
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