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The area (in sq units) of the triangle whose sides are 6, 5, √13, is

1) 5√2 2) 9 3) 6√2 4) 11 Solution: Let the sides be a = 6, b = 5, c... View Article

1) π/6 2) π/3 3) π/4 4) π/5 Solution: Given sides of a triangle are respectively 7 cm, 4√3 cm... View Article

1) a2 – b2 2) 1/(a2 – b2) 3) 1/a2 – 1/b2 4) a2 + b2 Solution: We know cos... View Article

(1) ⅗, ⅘ (2) ⅕, ⅖ (3) √3, 1/√3 (4) none of these Solution: Let the sides of the triangle... View Article

1) 1/2 2) √3/2 3) 1 4) √3 Solution: Given angles of a triangle ABC are in AP. Let a-d,... View Article

1) C = A + B 2) C = 2B 3) C = 2A 4) C = 3A Solution: Given... View Article

1) the radius are in AP 2) the altitudes are in HP 3) the angles are in AP 4) the... View Article

1) sin2 A + sin2 B = sin2 C 2) 2 sin A cos B = sin C 3) 2... View Article

1) A = B = C 2) C = A 3) A = B 4) B = C Solution: Given... View Article

1) 45o 2) 60o 3) 75o 4) 90o Solution: Given angles of a triangle ABC are in AP. Let a-d,... View Article

1) √2 + 2 : √3 2) 3 : 2 3) √3 + 2 : √2 4) 2 +√3 :... View Article

1) sin2 B 2) cos2 A 3) cos2 B 4) sin2 A Solution: In ∆ABC, (a + b + c)... View Article

1) 0 2) 1 3) 3 4) 2 Solution: By sine rule a/sin A = b/sin B = c/sin C... View Article

1) (- π / 2, π / 2) 2) (- π3 / 8, π3 / 8) 3) (7π3 / 8,... View Article

1) –1 2) 3 3) –3 4) 1 Solution: Given f(x) = x2 + bx – b Slope, m =... View Article

1) 5a2 2) 5a2/2 3) 25a2/2 4) None of these Solution: Let A = (2a, 0) and B = (0,... View Article

1) (-1, -14) 2) (3,4) 3) (1,2) 4) (–4, 13) Solution: Given line is 5x + y + 6 =... View Article

1) (–1, –5) 2) (1,3) 3) (3,1) 4) (5,1) Solution: Line is y – 2x = 0 Let the image... View Article

1) (2, -1) 2) (-2, 1) 3) (1, 1) 4) (1, 2) Solution: Let (a, b) be the foot of... View Article

1) (–1, –1) 2) (2, 2) 3) (–2, –2) 4) None of these Solution: Let ABC be the equilateral triangle.... View Article