Homeroom 101 and homeroom 102 share a hallway bulletin board. if homeroom 101 uses 3/5 of their half to display artwork, what fraction of the bulletin board is used to display homeroom 101's artwork

The triangle shown has a hypotenuse with a length of 13 feet. the measure of angle a is 20 degrees. and the measure of angle b is 70 degrees. which of the following is closest to the length, in feet, of line segment ac? no need to use a calculator to find the trig numbers. each function is listed below. 4.4 5 12.2 35.7