NCERT Class 12 Maths
Chapter 4: Determinants
5 Questions Solved
NCERT Solutions for Class 12 Maths Chapter 4 Determinants — Exercise 4.2
Click any question below for its step-by-step NCERT textbook solution, concept hints, and worked explanation.
Question 1
Find the triangle areas for (i) (1,0),(6,0),(4,3); (ii) (2,7),(1,1),(10,8); (iii) (−2,−3),(3,2),(−1,−8).
Question 2
Show that (a,b+c), (b,c+a), (c,a+b) are collinear.
Question 3
Find k if the triangle area is 4 square units: (i) (k,0),(4,0),(0,2); (ii) (−2,0),(0,4),(0,k).
Question 4
Using determinants, find the line through (i) (1,2),(3,6); (ii) (3,1),(9,3).
Question 5
The triangle with vertices (2,−6),(5,4),(k,4) has area 35 square units. Find k.