JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

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Analyzing +4 | -1

A=\sin ^2 \theta+\cos ^4 \theta

, then for all values of

\theta

View answer and explanation

Correct option: B

\frac{3}{4} \leq A \leq 1

Option B (

\frac{{3}}{{4}} \leq A \leq 1

) is correct because the expression can be rewritten in terms of

\sin^2 2\theta

and its range can be determined.

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