we ignore the negative. From the graph of the function, we can see that we should be expecting two solutions: one solution between 0° and 90° and the other between 90° and 180°. \(\sin x^\circ ...

This circle has the centre at the origin and a radius of 1 unit. The point P can move around the circumference of the circle. At point P the \(x\)-coordinate is \(\cos{\theta}\) and the \(y ...