Mathematics - Trigonometric Equation Question with Solution | TestHub

MathematicsTrigonometric EquationTrigonometric InequationsMedium2 minPYQ_2011

MathematicsMediumsingle choice

If $A = sin^{2} x + cos^{4} x$ , then for all real $x$

Answer:

Solution:

$A = sin^{2} x + cos^{4} x = \frac{7 + c o s 4 x}{8} \Rightarrow \frac{3}{4} \leq A \leq 1$

Stream:JEESubject:MathematicsTopic:Trigonometric EquationSubtopic:Trigonometric Inequations

⏱ 2mℹ️ Source: PYQ_2011

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