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If `sintheta=(1)/(3)`, then `costheta` will be

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If `sintheta=(1)/(3)`, then `costheta` will be
A. `(8)/(9)`
B. `(4)/(3)`
C. `(2sqrt2)/(3)`
D. `(3)/(4)`
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Correct Answer - C
`costheta=sqrt(1-sin^2theta)=sqrt(1-(1)/(9))=(2sqrt2)/(3)`
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