A man is flying in a hot-air balloon in a straight line while keeping it at a constant altitude. As he approaches a parking lot and notices that the angle of depression from his balloon to a friend's car is 36º. He flew directly over the car. A minute and a half later he had travelled 360 feet horizontally; he looks back to see his friend getting into the car and observes the angle of depression to be 37º. At that time, what is the distance between him and his friend?

221°

Step-by-step explanation:

Using sine rule

a/sinA = b/sinB = c/sinC

A= 36°

B= 37°

C = 107°

It takes 90 seconds to go from point A to point B. To find a, we will use

a/sinA = c/sinC

a/sin36°= 360/sin 107°

a(sin 107°) = 360sin36°

a = 360sin 36° / sin 107°

a = 360(0.5878) / 0.9563

a = 211.608/0.9563

a = 221.27°

a = 221°

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d