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If X Sin Alpha Y Cos Alpha Then X Sec 2alpha Y Cosec 2alpha Is

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

1) [3/4, 5/4] 2) [1/2, 3/4] 3) [1/4, 1] 4) None of these Answer: (3) [¼, 1] Solution: Given, x... View Article

1) cot α cot β = cot γ cot δ 2) cot α cot β cot γ = cot δ... View Article

1) tan A tan B = tan C tan D 2) tan A tan B = -tan C tan D... View Article

1) A + B = C 2) B + C = A 3) C + A = B 4) None... View Article

1) 1 2) 1/2 3) 2 4) None of these Answer: (2) 1/2 Solution: Given, α + β = 90°... View Article

1) cos(θ + φ) = cos(θ – φ) 2) cos(θ + φ) = 2 cos(θ – φ) 3) cos(θ +... View Article

1) cot α + cot β = 0 2) 1 + cot α cot β = 0 3) 1 +... View Article

1) 4 2) ±3 3) 5 4) None of these Answer: (2) ±3 Solution: Given, 3 sin θ + 5... View Article

1) √(2 – e2) 2) (2 – e2)3/2 3) 2 – e2 4) None of these Answer: (1) (2 –... View Article

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

1) 1 2) 3 3) 1/3 4) None of these Answer: (2) 3 Solution: Given, tan θ + tan(θ +... View Article

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

1) 1 2) -1 3) 0 4) None of these Answer: (3) 0 Solution: We know that, cos θ +... View Article

If there is a loss of electrons, then the half-reaction will be the oxidation half-reaction. On the other hand, a... View Article

For a 4d orbital, the value of n (principal quantum number) will always be 4 and the value of l... View Article

In a chemical reaction, if the sum of the enthalpies of all the reactants is greater than the sum of... View Article

In order to determine whether a molecule is polar or nonpolar, all its polar covalent bonds must be represented in... View Article

In order to determine the polarity of a covalent bond between two elements, the difference between the electronegativities of the... View Article

The Wolff-Kishner reduction reaction usually proceeds under strongly basic conditions in the presence of a large amount of heat. This... View Article