6.2 Trigonometric Functions: Unit Circle Approach/35

Failed to parse (MathML with SVG or PNG fallback (recommended for modern browsers and accessibility tools): Invalid response ("Math extension cannot connect to Restbase.") from server "https://en.wikipedia.org/api/rest_v1/":): {\displaystyle \sin{(45^\circ)}\cos{(45^\circ)}= \frac{\sqrt{2}}{2}\cdot\frac{\sqrt{2}}=}