© examsiri.com
Question : 79 of 160
Marks:
+1,
-0
Solution:
(b) Vertices of
â–³ABC are given as
A is
2−+ B is
−3−5 and
C is
3−4−4 ∴‌‌AB=−−2−6,BC=2−+ and
‌‌CA=−3−5 ∵‌‌|AB|=√1+4+36=√41 |BC|=√4+1+1=√6 and
|CA|=√1+9+25=√35 ∵‌‌|AB|2=|BC|2+|CA|2 ∴△ABC is an right-angled triangle.
© examsiri.com
Go to Question: