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What Is Light Water And Heavy Water

Light water is normal water which does not contain a large amount of deuterium. Heavy water contains a large amount... View Article

1) ± sin A sin B sin C 2) ± cos A cos B cos C 3) ± sin A... View Article

1) -1 2) ±1 3) 1 4) None of these Answer: (3) 1 Solution: Given, x sin3α + y cos3α... View Article

1) 2 2) 0 3) 4 4) 6 Answer: (2) 0 Solution: 2(sin6θ + cos6θ) – 3 (sin4θ + cos4θ)... View Article

1) (a/x)2/3 + (b/y)2/3 = 1 2) (b/x)2/3 + (a/y)2/3 = 1 3) (x/a)2/3 + (y/b)2/3 = 1 4) (x/b)2/3... 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) m2 – n2 = 4mn 2) m2 – n2 = 4mn 3) m2 – n2 = m2 + n2... View Article

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

1) sin Φ/sin θ 2) sin θ/sin Φ 3) sin θ/(1 – cos θ) 4) sin θ/(1 – cos Φ)... View Article

1) x = (y + 1)/(y – 1) 2) x = (y – 1)/(y + 1) 3) y = (1... View Article

1) 110 2) 191 3) 80 4) 194 Answer: (4) 194 Solution: Given, tan A + cot A = 4... View Article

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

1) 0 2) 1 3) sin y 4) cos y Answer: (4) cos y Solution: 1 – [sin2y/(1 + cos... View Article

1) sin θ/(1 + tan θ) 2) 2 sin θ/(1 + tan θ) 3) 2 sin θ/(1 + tan θ)2... View Article

cot x – tan x = 1) cot 2x 2) 2 cot2x 3) 2 cot 2x 4) cot2(2x) Answer: (3)... View Article

1) 0 2) e 3) 1/3 4) None of these Answer: (4) None of these Solution: elog10 tan 1° +... View Article

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

If sec θ + tan θ = p, then tan θ is equal to 1) 2p/(p2 – 1) 2) (p2... View Article

If cos θ – sin θ = √2 sin θ, then cos θ + sin θ is equal to 1)... View Article

1) (ex + e-x)/2 2) 2/(ex + e-x) 3) (ex – e-x)/2 4) (ex – e-x)/(ex + e-x) Answer: (2)... View Article