Perhaps you thought that $\displaystyle\frac{\sqrt{{2}}}{{2}}\usepackage{cmbright}\Huge\$ was larger than 1 and you realized that the sine function never gets larger than 1. But $\displaystyle\frac{\sqrt{{2}}}{{2}}\approx{0.707}\usepackage{cmbright}\Huge\$ so there will be some locations where on the interval where $\displaystyle{\sin{\theta}}=\frac{\sqrt{{2}}}{{2}}\usepackage{cmbright}\Huge\$ .