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If e is the eccentricity of the hyperbol...

If e is the eccentricity of the hyperbola `(x^(2))/(a^(2))-(y^(2))/(b^(2))=1` and `theta` is the angle between the asymptotes, then `cos.(theta)/(2)` is equal to

A

`(1)/(2e)`

B

`(1)/(e)`

C

`(1)/(e^(2))`

D

`(1)/(2e^(2))`

Text Solution

Verified by Experts

The correct Answer is:
B
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