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tan 9^(@) - tan 27^(@) - tan 63^(@) + ta...

`tan 9^(@) - tan 27^(@) - tan 63^(@) + tan 81^(@) =`

A

2

B

3

C

4

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-TRANSFORMATIONS -PRACTICE SHEET (EXERCISE-I LEVEL-I Straight Objective Type Questions)
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  4. (sin ^(2) A - sin ^(2) B)/( sin A cos A - sin B cos B) is equal to

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  5. ( sin 3 theta + sin 5 theta + sin 7 theta + sin 9 theta)/( cos 3 thet...

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  13. If cos (theta - alpha) , cos theta , cos (theta + alpha ) are in H.P....

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