If the equation \cos ^{4} \theta+ \sin ^{4} \theta+\lambda=0 has realsolutions for \theta, then \lambda lies in the interval: [2 Sep 2020 Shift 2]

Correct Answer is : [−1,−12]

Trigonometric Ratios and Identities

Section: Mathematics

Question : 44 of 64

Marks: +1, -0

If the equation cos4θ+sin‌4θ+λ=0 has realsolutions for θ, then λ lies in the interval:

[2 Sep 2020 Shift 2]

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