1.

Find k, if the equation 2x^(2) + kxy - 6y^(2) + 3x + y + 1 = 0 represents a pair of lines. Find the point of intersection of the lines and angle between the lines for this value of k.

Answer»


Answer :`K=4,((-5)/(8),(-1)/(8)),COS^(-1)((1)/(sqrt(5)))` or `k= -1((-5)/(7),(1)/(7))cos^(-1)((4)/(sqrt(65)))`


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