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Q:

$\tan^{3} A is equal to$

A) 3tanA - tan3A(1 - 3tan2A)	B) 3tanA + tan3A(1 - 3tan2A)
C) 3tanA - tan3A(1 + 3tan2A)	D) 3tanA + tan3A(1 + 3tan2A)

Answer & Explanation Answer: A) 3tanA - tan3A(1 - 3tan2A)

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Filed Under: Simplification
Exam Prep: Bank Exams

Q:

If $3 x^{2} = 10^{2} - 5^{2}$ , find the value of x?

A) 7	B) 5
C) 9	D) 11

Answer & Explanation Answer: B) 5

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Q:

If $\tan^{2} A / {(secA - 1)}^{2} = x$ , then the value of x is

A) (1+cosecA) / (1-cosecA)	B) (1+cosA)(1-cosA)
C) (1+cosA) / (1-cosA)	D) (1+cosecA)(1-cosecA)

Answer & Explanation Answer: C) (1+cosA) / (1-cosA)

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Q:

${tanAcosec}^{2} A$ is equal to

A) (1 + tan2A)cotA	B) (1 - tan2A)cotA
C) √[(1 + tan2A)cotA]	D) √[(1 - tan2A)cotA]

Answer & Explanation Answer: A) (1 + tan2A)cotA

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Q:

$2 - {(cosA + sinA)}^{2}$ is equal to

A) (cosecA - sinA)2	B) cosA - sinA
C) cosecA - sinA	D) (cosA - sinA)2

Answer & Explanation Answer: D) (cosA - sinA)2

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Q:

On dividing $221 a^{2} b^{2} by 13 b^{2}$ , we get _____.

A) 17a2	B) 17b2
C) 13a2b2	D) 13

Answer & Explanation Answer: A) 17a2

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Q:

Coefficient of $x^{2} in 4 x^{3} - 2 x^{2} + 2 x - 3$ are

A) 6	B) -2
C) 3	D) -3

Answer & Explanation Answer: B) -2

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Filed Under: Simplification
Exam Prep: Bank Exams , CAT

Q:

What is the value of $2 \sec^{2} A$ ?

A) secA/(cosecA - 1) + secA/(cosecA +1)	B) cosecA/(secA -1) + cosecA/(secA +1)
C) cosecA/(cosecA - 1) + cosecA/(cosecA +1)	D) secA/(secA - 1) + secA/(secA +1)

Answer & Explanation Answer: C) cosecA/(cosecA - 1) + cosecA/(cosecA +1)

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Filed Under: Simplification
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