Question

Answer question quickly please

Answer 1

`\begin{array}{llll} \textit{using the pythagorean theorem} \\\\ a^2+o^2=c^2\implies a=√(c^2 - o^2) \end{array} \qquad \begin{cases} c=\stackrel{hypotenuse}{9}\\ a=\stackrel{adjacent}{b}\\ o=\stackrel{opposite}{6} \end{cases} \\\\\\ b=√( 9^2 - 6^2)\implies b=√( 81 - 36 ) \implies b=√( 45 )`