Question

7. The angular diameter of the sun from the earth is
about 16''. If the distance of the earth from the sun is
1.49 x 1011 m, then what will be the diameter of the
sun ?
[Ans. 1.16 x 107 m)​

Answer 1

Answer:

i hope it will help u

Explanation:

Hii, there

I think something is wrong with question because minute unit is used for time not for measuring diameter.

I can give you similar example here in which angular diameter of the sun is suppose 2000'. and the distance of the Earth from the Sun is 1.49 x 10^11 m. and we need to find diameter of the Sun.

solution:

=> It's Given,

    D=1.496*10^11m

now, Angular distance of the Sun = 2000

    =2000/60*60=0.55 degree

here the angle  θ is very small. thus, the traingle is approx right angle triangle .

    => To convert to radian

    =0.55*π/180

    =0.0096 radian

    => Now , d = D tan θ

The angle formed is very small so we can assume that tan θ= θ

    d=D θ

    d=1.49 * 10^11 * 0.0096

    =0.014 * 10^11m

Thus, the diameter of sun will be 0.014 * 10^11m.

Answer 2

Explanation:

it's your answer

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