Help with trig question (1 Viewer)

[dabatman]

Any one know how to do this?

My answer was entirely different from that solutions which are: 52' 30° , 82' 30° , -97' 30°, -127' 30°

 

[Drongoski]

 

[bujolover]

Any one know how to do this?

My answer was entirely different from that solutions which are: 52' 30° , 82' 30° , -97' 30°, -127' 30°

Domain: -405° ≤ 2x - 45° ≤ 315°
2x - 45° = 60°, 120°, (60-360)° or (120-360)°

x = 52°30', 82°30', -127°30' or -97°30'

In order: x = -127°30', -97°30', 52°30' or 82°30'