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Question

If 0<xπ2, then minimum value of sinx+cscx is

A
0
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B
1
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C
1
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D
2
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Solution

The correct option is D 2
sinx+cscx
By AMGM inequality
sinx+cscx2sinxcscx
sinx+cscx2(1)
Min value is 2

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