1. 1 step solns A Home End 1) Solve Sin(x) = 0.24
Positive Sin so quadrant 1 & 2
x = Sin
180
0, 360 A T C S
1st solution: x = 13.9°
2nd solution: x = 180 – 13.9 = 166.1°
Positive Cos so quadrant 1 & 4
2) Solve Cos(x) = 0.44
x = Cos
180
0, 360 A T C S
1st solution: x = 63.9°
2nd solution: x = 360 – 63.9 = 296.1°
3) Solve Tan(x) = 0.84
Positive Tan so quadrant 1 & 3
x = Tan
180
0, 360 A T C S
1st solution: x = 40.0°
2nd solution: x = = 220.0°

2. 1 step solns B Home End 4) Solve Sin(x) = -0.34
Negative Sin so quadrant 3 & 4
x = Sin = 19.9º
180
0, 360 A T C S
Use positive value
1st solution: x = ° = 199.9º
2nd solution: x = 360 – 19.9 = 340.1°
5) Solve Cos(x) = -0.77
Negative Cos so quadrant 2 & 3
x = Cos = 39.6º
Use positive value
180
0, 360 A T C S
1st solution: x = 180 – 39.6° = 140.4º
2nd solution: x = = 219.6°