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If e is the eccentricity of x^2/a^2-y^2/...

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

A

`1//2e`

B

`1//e`

C

`1//e^(2)`

D

none of these

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The correct Answer is:
B
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FIITJEE-HYPERBOLA-ASSIGNMENT PROBLEMS ( OBJECTIVE) Level - I
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