1.

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

Answer» `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`
`sin1=sin(57.32^@)=0.8416`
`sin7=sin(401.27^@)=0.6592`
Sin3 is least.


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