PointMedium
Question
Lines, L1 : x + 
= 2, and L2 : ax + by = 1, meet at P and enclose an angle of 45o between them. Line L3 : y = , also passes through P then -
= 2, and L2 : ax + by = 1, meet at P and enclose an angle of 45o between them. Line L3 : y = , also passes through P then -Options
A.a2 + b2 = 1
B.a2 + b2 = 2
C.a2 + b2 = 3
D.a2 + b2 = 4
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