Math.atan(3/4)*(180/3.1415)

Math.acos(4/5)*(180/3.1416)

the three internal angles in degrees are 36.87, 53.13, and 90. The three angles in radians are 0.64, 0.93, and 1.57. The three angles of a 3:4:5 triangle are: 90 degrees (the right angle), acos(4/5) = asin(3/5) = 36.87 degrees acos(3/5) = asin(4/5) = 53.13 degrees SOHCAHTOA: SOH: SinX =opposite/hypotenuse CAH:CosX =Adjacent/Hypotenuse TOA:TanX =Opposite/Adjacent