Find all angles θ between 0° and 180° satisfying sin(θ)=1/9

What is the slope of the line that contains the points (-5, 6) and (14. - 7)?

Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1