Q26Multiple choice
The area of a triangle with vertices (–3, 0), (3, 0) and (0, k) is 9 sq. units. The value of k will be
- (A)9
- (B)3
- (C)–9
- (D)6 b 2 − ab b − c bc − ac The determinant ab − a a − b b 2 − ab equals 27. bc − ac c − a ab − a 2 (A) abc (b–c) (c – a) (a – b) (B) (b–c) (c – a) (a – b) (C) (a + b + c) (b – c) (c – a) (a – b) (D) None of these DETERMINANTS 81 sin x cos x cos x