Help as soon as you can, please!
7.
cos(1)=40/41=0,9756
cos(2)= 9/41=0,2194
cos(3)=24/25=0,96
cos(4)= 7/25=0,28 D=73,74°
8.
tan(F)=3/4 F=36,8698..° F=37°
