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The Maximum Value Of 3 Cos X 4 Sin X 5

1) 5 2) 6 3) 7 4) None of these Answer: (4) None of these Solution: 3 cos x +... View Article

1) 4 cos 28° cos 29° sin 33° 2) cos 28° cos 29° sin 33° 3) 4 cos 28° sin... View Article

1) – 5 2) 1/5 3) 1/243 4) 1/27 Answer: (3) 1/243 Solution: 27cos 2x . 81sin 2x = (3)3... View Article

1) 3√3/4 2) 3√3/2 3) 3√3 4) √3 Answer: (1) 3√3/4 Solution: f(x) = sin x(1 + cos x) f'(x)... View Article

1) 2 2) 3 3) 0 4) 1 Answer: (2) 3 Solution: 3 sin2θ + 4 cos2θ = 3(1 –... View Article

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

1) (sin2nα)/(2n sin α) 2) (sin 2n α)/(2n sin2n – 1α) 3) (sin 4n – 1α)/(4n – 1 sin α)... View Article

1) x2 – 1 2) √(x2 – 1) 3) √(x2 + 1) 4) x2 + 1 Answer: (2) √(x2 –... View Article

1) 2 2) 4 3) 6 4) 8 Answer: (3) 6 Solution: Given, sin3x sin 3x = ∑m=0n Cm cos... View Article

1) 2√2 2) √6 3) 2√6 4) √6 + √2 Answer: (1) 2√2 Solution: cosec 15° – sec 15° =... View Article

1) 1 + 2 sin2(θ/2) 2) 2 cos2θ – 1 3) 1 – 2 sin2(θ/2) 4) 1 + 2 cos2θ... View Article

1) (4 – √7)/3 2) -(4 + √7)/3 3) (1 + √7)/4 4) (1 – √7)/4 Answer: (2) -(4 +... View Article

1) tan2α/2 2) tan2β/2 3) tan2θ/2 4) cot2β/2 Answer: (2) tan2β/2 Solution: Given, cos θ = cos α cos β….(i)... View Article

1) a 2) a – b 3) a + b 4) b Answer: (1) a Solution: Given, tan x =... View Article

1) √2 tan β 2) tan β 3) sin 2β 4) √2 cot β Answer: (1) √2 tan β Solution:... View Article

1) (x2 + y2)/(x2 – y2) 2) 2xy/(x2 + y2) 3) 2xy(x2 – y2) 4) 2xy/(y2 – x2) Answer: (3)... View Article

1) sin 2A 2) cos 2A 3) tan 2A 4) cot 2A Answer: (1) sin 2A Solution: [1 – tan2(45°... View Article

1) 2 sin nθ 2) 2 cos nθ 3) sin (2nθ) 4) cos (2n θ) Answer: (2) 2 cos nθ... View Article

1) tan 2θ 2) tan 3θ 3) tan2θ 4) tan3θ Answer: (2) tan 3θ Solution: tan θ + tan(θ +... View Article

1) π/2 2) π/3 3) π/4 4) π/6 Answer: (1) π/2 Solution, In a triangle ABC, A + B +... View Article