Straight Line Question 39
Question: The points $ (at_1^{2},2at_1),(at_2^{2},2at_2) $ and $ (a,0) $ will be collinear, if
Options:
A) $ t_1t_2=1 $
B) $ t_1t_2=-1 $
C) $ t_1+t_2=1 $
D) $ t_1+t_2=-1 $
Correct Answer: BShow Answer
Answer:
Solution:
Þ $ (1-t_2^{2})=-t_2(t_2+t_1) $ or $ t_1t_2=-1 $ .