Range of $\sqrt{\cos ^2 x-10 \cos x+25}+2$ is

JEE MATHEMATICS MCQ: TRIGONOMETRY RATIOS

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Range of

\sqrt{\cos ^2 x-10 \cos x+25}+2

View answer and explanation

Correct option: C

[6,8]

Option C ([6,8]) is correct because simplifying the expression

\sqrt{{\cos ^2 x-10 \cos x+25}}+2

leads to the range [6,8].

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C

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