1 message If angle 5 is 120 degrees, what is the measure of angle 6

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

Find the value of x. give reasons to justify your solutions! h ∈ ig

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis