Omar wants to determine cos(-2) using the ratios of the 30° -60° -90° right triangle. How should he use this information to determine cos(- -)?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft