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the lines L1 and L2 denoted by 3x^2...

the lines `L_1` and `L_2` denoted by `3x^2 + 10xy +8y^2 +14x +22y + 15 = 0` intersect at the point P and have gradients `M_1` and `M_2` respectively.The acute angles between them is `theta` . which of the following relations hold good ?

A

`(-1,-2)`

B

`(1,-2)`

C

`(1,2)`

D

`(-2,1)`

Text Solution

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The correct Answer is:
B
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