6.2 Trigonometric Functions: Unit Circle Approach/78

$\theta \rightarrow (5,-12)$

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 \theta \rightarrow x=5, \, y=-12, \, r=? }

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 \begin{align} (5)^2+(-12)^2 &= r^2 \\ 25+144 &= r^2 \\ 169 &= r^2 \\ \sqrt{169} &= r\\ 13 &= r \\ \end{align} }