Find the length of each side of a regular hexagon whose perimeter is 84 meters.

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Ametal rod is 2/5 meters long. it will be cut into pieces that are each 1/30 meters long. how many pieces will be made from the rod?

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.