Question

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

Answer 1

hope this will help you

`let \: the \: angle \: be \: \alpha \\ \cos( \alpha ) = (b)/(h) \\ \cos(60) = (x)/(9) \\ (1)/(2) = (x)/(9) \\ x = (9)/(2) \\ x = 4.5`