Home Maths Quadratic Equations Mix The sin θ and cos θ are roots of the equatio…
Maths Quadratic Equations Mix Single Correct MCQ
Published on: August 14, 2026

The sin θ and cos θ are roots of the equation λ x 2 + mx + n =0, then

A
λ 2 + m 2 + 2 λ n = 0
B
λ 2 – m 2 + 2 λ n = 0
C
λ 2 – m 2 – 2 λ n = 0
D
None of these

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The correct answer is:
B

Here

Squaring (i)

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