My aluminum-foil clairvoyance cap is a bit foggy this morning, so I can't quite see your diagram.
I will assume you have a right-angled triangle KJL, where J is 90° and KL is the hypotenuse.
then cos 39° = JL/12
JL = 12cos39 = appr. 9.33
The angle of elevation from L to K measures 39 degrees. If KL = 12, find JL. Round to nearest tenth.
1 answer
1 answer