If the pair of straight lines ax2 + 2hxy – ay2 = 0 and bx2 + 2gxy – by2 =0 be such that each bisect the angle between the other , thenhg + ab = 0 ah + bg = 0h2 – ab = 0 ag + bh = 0
If the pair of straight lines ax2 + 2hxy – ay2 = 0 and bx2 + 2gxy – by2 =0 be such that each bisect the angle between the other , then
hg + ab = 0 ah + bg = 0
h2 – ab = 0 ag + bh = 0