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The angular diameter of the sun is 1920'...

The angular diameter of the sun is 1920''. If the distance of the sun from the earth is `1.5xx10^(11)m`, what is the linear diameter of the sun?

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Distance of the sun from the earth,
`S=1.5xx10^(11)m`
Angular diameter of the sun,
`theta=1920''`
`=1920xx4.85xx10^(-6)" rad"`
Linear diameter of the sun,
`D=s xx theta`
`=1.5xx10^(11)xx1920xx4.85xx10^(-6)`
`=1.4xx10^(9)m`
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