5.) Write out law of cosines and find hypotenuse of triangle with 2 sides lengths equal to three and the included angle measuring 75 degrees. 6.) What happens in law of cosines formula if the angle from the above question is changed to 90 degrees? 7.) In what situations (if any) is Heron's formula limited/ not useful for finding the area of a triangle? 8.) Why does the location/direction of a vector is important in analysis