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If Abcd Is A Cyclic Quadrilateral Then The Value Of Cos A

1) 0 2) 1 3) 2(cos B – cos D) 4) 2(cos A – cos C) Answer: (1) 0 Solution:... View Article

1) Zero 2) -3 3) Positive 4) Negative Answer: (3) Positive Solution: α + β + γ = π Taking... View Article

1) 13 2) 9 3) 6 4) 12 Answer: (4) 12 Solution: 9 tan2θ + 4 cot2θ = (3 tan... View Article

1) K ≤ 1/3√3 2) K ≥ 1/3√3 3) K < 1/9 4) K > 1/3 Answer: (1) K ≤... View Article

1) 1, -1 2) 1/2, -1/2 3) 1/4, -1/4 4) 2, -2 Answer: (2) 1/2, -1/2 Solution: Let f(x) =... View Article

1) 5 2) 9 3) 7 4) 0 Answer: (4) 0 Solution: 3 cos x + 4 sin x +... View Article

1) a + b 2) a – b 3) |a| + |b| 4) (a2 + b2)1/2 Answer: (4) (a2 +... View Article

1) 3 2) 4 3) 5 4) None of these Answer: (3) 5 Solution: We know that the maximum value... View Article

1) 1 + 1/√2 2) 1 + √2 3) √2 – 1 4) None of these Answer: (2) 1 +... View Article

1) 0 2) -1 3) 1 4) -2 5) 2 Answer: (3) 1 Solution: Given that -π/2 < θ <... View Article

1) 1/5√2 2) 7/25 3) 4/5 4) 3/5 Answer: (3) 4/5 Solution: Given, sin α = 336/625 and 450° <... View Article

1) 15° 2) 30° 3) 45° 4) 60° Answer: (2) 30° Solution: Given, 2 cos2θ – 2 sin2θ = 1... View Article

1) √[(1 + cos 30°)/2] 2) √[(1 – cos 30°)/2] 3) ±√[(1 + cos 30°)/2] 4) ±√[(1 – cos 30°)/2]... View Article

1) sin 15° 2) cos 15° 3) sin 15° cos 15° 4) sin 15° cos 75° Answer: (3) sin 15°... View Article

1) cos 2θ 2) cos 3θ 3) sin 2θ 4) sin 3θ Answer: (1) cos 2θ Solution: cos 2(θ +... View Article

1) 3/8 2) 5/8 3) 3/4 4) 5/4 Answer: (2) 5/8 Solution: Given, sin 2θ + sin 2Φ = 1/2….(i)... View Article

1) 2 cos 6θ 2) 2 cos 12θ 3) 2 cos 3θ 4) 2 sin 3θ Answer: (2) 2 cos... View Article

1) cos θ 2) sin θ 3) sec θ 4) cos 2θ Answer: (1) cos θ Solution: Given, tan θ/2... View Article

1) 1/2 2) 1/3 3) 1/4 4) 1/8 Answer: (2) 1/3 Solution: Given, cos(α – β)/2 = 2 cos(α +... View Article

1) tan A – tan B 2) tan(A – B) 3) tan(A + B) 4) tan(A + 2B) Answer: (2)... View Article