Recent content by crm

Warren and Sleek: Thank you so much for your help on Monday night. I found the diagram and the explanation of the angles of elevation. I found them when I got up Tuesday morning and provided them to my daughter. She reviewed this prior to her exam. She later advised that she had an almost...

Warren and Sleek: Thank you so much! crm

Okay, so the first triangle is a right triangle with the angle at the top being 50 degrees and the angle at the bottom being 40 degrees. The second triangle has a 20 degree angle at the top (70 - 50) and angles at the bottom of 140 and 20 degrees. And the length at the bottom is 150 feet. We...

Yes, we have drawn a picture, but we do not know any sides. We know that the entire length of the two triangles together is 150, but how do we determine the length of the bases? Are they halved? and if so, how do you know? Because if they are not halved then there is no way to find the side...

My daughter says that to use the law of cosines you need to know two sides and an angle. In the above problem, we only know one side. Any comments?

can you work through to the solution?

Homework Statement A surveyor on the ground takes two readings of the angles of elevation at the top of the tower. From 150' apart, the measures are 50 and 70 degrees. Find the tower's height to the nearest foot. Homework Equations The Attempt at a Solution