The angle between the lines 3x^(2)+7xy+2...

The angle between the lines `3x^(2)+7xy+2y^(2)+5x+5y+2=0` is given by

A

(a) `0`

B

(b) `pi//2`

C

(c) `pi//4`

D

(d) `pi//6`

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The correct Answer is:

C

NA

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