sin x ∘ = 0.5 x ∘ = sin 1 (0.5) x ∘ = 30 ∘ So we know that the first solution is 30˚ as previously predicted from the graph.

Rearrange using 'change side, change operation'. When you move the 'sin' over to the other side of the equals sign, we do the opposite which is sin -1 (inverse sin).