Question

Find the acute angle between the pair of lines represented by the following equ
(i) x2 - 7xy + 12y2 = 0​

Answer 1

Step-by-step explanation:

Given

straight line =x²-7xy+12y²

To prove angle between them

cos¢=(a+b)²÷√(a-b)²+4h²

cos¢=(1+12)÷√(1-12)²+4×7/2²

cos¢=13/√17