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2 Sin 2 Beta 4 Cos Alpha Plus Beta Sin Alpha Sin Beta

1) sin 2α 2) cos 2β 3) cos 2α 4) sin 2β Answer: (3) cos 2α Solution: 2 sin2β +... View Article

1) (p + q)/(p – q) 2) (p – q)/(1 + pq) 3) (p + q)/(1 – pq) 4) (1... View Article

1) 1/2 2) 1/4 3) 1/8 4) 1/16 Answer: (3) 1/8 Solution: (1 + cos π/8)(1 + cos 3π/8)(1 +... View Article

1) 1/2 2) 1/4 3) 3/2 4) 3/4 Answer: (3) 3/2 Solution: sin⁴(π/8) + sin⁴(3π/8) + sin⁴(5π/8) + sin⁴(7π/8) =... View Article

1) cos θ 2) cos 2θ 3) sin θ 4) sin 2θ Answer: (4) sin 2θ Solution: Given, sin 6θ... View Article

1) 1 2) 0 3) -1 4) None of these Answer: (2) 0 Solution: Given, x/cos θ = y/[cos(θ –... View Article

1) [(b – c)(d – b)]/ [(a – d)(c – a)] 2) [(a – d)(c – a)]/ [(b – c)(d... View Article

1) √(p/q) 2) √(q/p) 3) √pq 4) pq Answer: (2) √(q/p) Solution: Given, cosec θ = (p + q)/(p –... View Article

1) y = z 2) y + z = a + c 3) y – z = a – c... View Article

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

1) x > 0, y > 0, z > 0 2) x > 0, y < 0, 0 < z... View Article

1) tan A tan B + tan C 2) tan B – tan C – tan A 3) tan A... View Article

1) tan α 2) tan 2α 3) cot α 4) cot 2α Answer: (3) cot α Solution: tan α +... View Article

1) 1/8 2) 1/16 3) 1/32 4) 1/64 Answer: (4) 1/64 Solution: sin π/14 sin 3π/14 sin 5π/14 sin 7π/14... View Article

1) 4/3 2) 3/4 3) 1/2 4) 2 Answer: (2) 3/4 Solution: Given, cos6α + sin6α + K sin2(2α) =... View Article

1) √2 cos θ, √2 sin θ 2) √2 sin θ, √2 cos θ 3) √2 sin θ, √2 sin... View Article

1) 2 2) 2n 3) 2n – 1 4) 2n – 2 Answer: (1) 2 Solution: Given, sin x +... View Article

1) √(1 + cos2α) 2) √(1 + sin2α) 3) √(2 + sin2α) 4) √(2 + cos2α) Answer: (2) √(1 +... View Article

1) sin(A – B)/2 2) tan(A – B)/2 3) cot(A – B)/2 4) None of these Answer: (2) tan(A –... View Article

1) 1 + cot α 2) 1 – cot α 3) -1 – cot α 4) -1 + cot α... View Article