Chapter 4 Determinants EXERCISE 4.2
EXERCISE 4.2
- Find area of the triangle with vertices at the point given in each of the following:
(i) (1,0), (6, 0), (4, 3)
(iii) (-2, -3), (3, 2), (-1, -8)
(ii) (2, 7), (1, 1), (10, 8)
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#missing- Show that points A (a, b + c), B (b, c + a), C (c, a + b) are collinear.
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#missing- Find values of k if area of triangle is 4 sq. units and vertices are
(i) (k, 0), (4, 0), (0, 2)
(ii) (-2, 0), (0, 4), (0, k)
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#missing- (i) Find equation of line joining (1, 2) and (3, 6) using determinants.
(ii) Find equation of line joining (3, 1) and (9, 3) using determinants.
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#missing- If area of triangle is 35 sq units with vertices (2,6), (5, 4) and (k, 4). Then k is
(A) 12
(B) -2
(C) -12,-2
(D) 12,-2
