If (2,4),(2t,6t),(3,8) are collinear, then  t=

 

Asked by sarithamunnam | 26th Jul, 2018, 08:11: PM

Expert Answer:

Let A (2, 4), B (2t, 6t) and C (3, 8)
According to the question,
Area of triangle ABC = 0
begin mathsize 16px style 1 half open square brackets 2 left parenthesis 6 straight t space minus space 8 right parenthesis plus 2 straight t left parenthesis 8 space minus space 6 straight t right parenthesis plus 3 left parenthesis 4 minus 8 right parenthesis close square brackets equals 0 end style
Solve it further and find t.

Answered by Sneha shidid | 27th Jul, 2018, 09:43: AM