Mr. A used an app on his phone and measured the angle of elevation to the top of a mountain and found it to be 21°. He then drove 4.5 miles closer to the mountain and again measured the angle of elevation. Now it was 47°. Assuming he drove along a straight, flat road. What is the height of the mountain? Round your answer to the hundredths place and label appropriate units. Upload a clear photo of the work for just this problem. Make certain the format is jpeg or pdf.

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?