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.