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The acute angle between the lines x^(2)-...

The acute angle between the lines `x^(2)-2 x y sec alpha+y^(2)=0` is

A

`alpha`

B

`(alpha)/(2)`

C

`(pi)/(2)`

D

`theta`

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The correct Answer is:
A
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HIMALAYA PUBLICATION-Pair Of Lines-QUESTION BANK
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