Question

PLEASE HELP ME!!! It’s High School Math. Algebra 2 and it’s on Big Ideas Math.

Answer 1

Answer:

hope this will help you

$let \: the \: angle \: be \: \alpha \\ \cos( \alpha ) = \frac{b}{h} \\ \cos(60) = \frac{x}{9} \\ \frac{1}{2} = \frac{x}{9} \\ x = \frac{9}{2} \\ x = 4.5$