# Lecture-4

00:00:47 NCERT Solutions Exercise 4.2 Question 10 part (i)

00:05:57 NCERT Solutions Exercise 4.2 Question 10 part (ii)

00:08:47 NCERT Solutions Exercise 4.2 Question 11 part (i)

00:13:27 NCERT Solutions Exercise 4.2 Question 11 part (ii)

00:18:47 NCERT Solutions Exercise 4.2 Question 12

00:21:37 NCERT Solutions Exercise 4.2 Question 13

00:29:17 NCERT Solutions Exercise 4.2 Question 14

00:35:37 NCERT Solutions Exercise 4.2 Question 15

00:36:17 NCERT Solutions Exercise 4.2 Question 16

00:37:27 Area of a triangle using determinants

00:40:17 NCERT Solutions Exercise 4.3 Question 1

Find area of the triangle with vertices at the point given in each of the following: (i) (1, 0), (6, 0), (4, 3) (ii) (2, 7), (1, 1), (10, 8) (iii) (–2, –3), (3, 2), (–1, –8)

00:46:22 Prove points are collinear using area of triangle and determinants

00:47:02 NCERT Solutions Exercise 4.3 Question 2

Show that points A (a, b + c), B (b, c + a), C (c, a + b) are collinear.

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