The area of a triangle is 5 square unit. Two of its vertices are (2,1),(3,−2) and the third vertex lies on the line y=x+3 . The third vertex can be
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
(7/2,13/2)
b
(3/2,3/2)
c
(7/2,−13/2)
d
(3/2,−3/2)
answer is A.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
Conceptual ( substituting the options in the given line)Alternative methodLet (h,k) be the third vertex It lies on y=x+3 ⇒k=h+3 Area of triangle=5 122113-21hk1=5 2(-2-k)-1(3-h)+1(3k+2h)=10 3h+k=17 substituting k=h+3 3h+h+3=17 4h=14 h=72 hence k=132