Question

Find the value of a '€' such that points P(1, 2), Q(-2,3) and R(€ + 1, €) are not forming a triangle?​

Answer 1

Answer:

This three points don,t form a triangle means ,these 3 points are co linear . thus by using distance formula ( co ordinate geometry) you will get answer that co ordinates of R=(4,3) . Hence,€=3