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If 'x' is an acute angle and y=log(tan((...

If 'x' is an acute angle and `y=log(tan((pi)/(4)+(x)/(2)))` then cosx.coshy =

A

0

B

-1

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-HYPERBOLIC FUNCTIONS -LECTURE SHEET EXERCISE - I (STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  10. If tan h^(2) x = cos theta then cos h 2x =

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