What is the minimum diameter of a mirror on a telescope that would allow you to resolve objects with angular separation of 3.5 cross times 10 to the power of negative 5 end exponent radians ? Assume an average wavelength of 550 nm for the light received.

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?