Suppose that two stars in a binary star system are separated by a distance of 60 million kilometers and are located at a distance of 180 light-years from earth.
what is the angular separation of the two stars? give your answer in degrees.
express your answer using two significant figures.

The angular seperation is

Explanation:

For two objects separated by a distance 's' and at a distance 'd' from the observer the angular separation ignoring the physical effects is given by

In the given question

light years

We know that in 1 light year there are

Using the calculated values we get

Since π radians equals 180 degrees thus we have