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Trigonometric Ratio and Identites question

2011 · Shift 0 · Q49

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JEE Main
Mathematics
Trigonometric Ratio and Identites
2011 · Shift 0 · Q49

Trigonometric Ratio and Identites question

2011 · Shift 0 · Q49

JEE MainMathematicsTrigonometric Ratio and IdentitesMCQ+4 / −1

If

A = {\sin ^2}x + {\cos ^4}x,

then for all real

x

:

A
${{13} \over {16}} \le A \le 1$
B
$1 \le A \le 2$
C
${3 \over 4} \le A \le {{13} \over {16}}$
D
${{3} \over {4}} \le A \le 1$

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