A spacelab circles Earth at an altitude of 380 miles. When an astronaut views the horizon of Earth the angle theta is 65.8 degrees. Use this information to estimate the radius of Earth.
What do I do?
(I know how it looks so you dont have to draw it but I dont know what am finding, hence I cant find it)
is your sketch like the attachment?
then, as skeeter showed
multiply both sides by the denominator
multiply out the left
subtract R from both sides to bring them together
subtract the 380Sin part from both sides to have the R terms alone on the left
factorise the R parts
divide both sides by the multiplier of R
no its not I tried to upload it but it wont
its the earth then its this triangle forming at the edge of it, and it bottom length is 360 mi and it tips the earth then the line extends and to the center of the earth and thats what their tellin me to find and the angle touching it is 68.5 degrees