Let's remind ourselves of what the sine graph looks like ... sin x^\circ = \frac{3}{4}\) Since this is sin and is positive this means that we will be in the two quadrants in which the sine ...

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 ...