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Which of the following is the least? ...

Which of the following is the least? (a) sin 3      (b)  sin 2        (c) sin 1            (d) sin 7

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`r` radian
`r*180/pi` deegree
`3->3*180/pi=171.96^@`
`2->2*180/pi=114.64^@`
`1->57.33^@`
`7->401.27^@`
`sin3=sin(171.96^@)=0.139`
`sin2=sin(114.64^@)=0.9089`
...
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