In right triangle DEF, we have D = 25, E = 90, and EF = 93. Find DE to the nearest tenth. You may use a calculator for this problem.
Here is one way....use law of sines
93 is to sin 25 as DE is to sin 65
93 / sin25 = DE/sin 65
sin 65o * 93 / sin 25o = DE Use your calculator to finish !
DE = 93 / tan(25º) = 199.4