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The Value Of The Determinant                            Is Zero If

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Question

Solution

Correct option is

sin x = 0

Appling C1 → C1 + C3 – 2cos x C2, the given determinant is equal to

Which is zero if sin x = 0 or cos x = (1+a2)/2a. As a ≠ 1,

(1 + a2)/2a >1

Therefore, cos x = (1+ a2)/2a is not possible.

SIMILAR QUESTIONS

Q1

If sin θ and cos θ are the roots of the equation ax2 – bx + c = 0, then aband c satisfy the relation

Q2

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Q3

The value of

Q4

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Q5

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Q6

is equal to

Q7

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Q8

or equal to

Q9

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Q10

If x = sin αy = sin βz = sin (α + β) then cos (α + β) =