Please explain the questions using sine and cosine law.

A vector extends from the origin to the point (5, 8). Find the angle the vector makes with the positive x-axis. A 70 C 57.990 B 65 D 38.680 A 100 N block is at rest on a ramp inclined at 25. Find the frictional force keeping the block at rest. A 93.97 N C 100 N B 42.26 N D 50 N The angle that the handle of a lawnmower makes with the ground is 55. You exert a force along the handle of 50 N. How much of the force is being used to push the lawnmower forward? A 25 N C 50 N B 28.68 N D 17.1 N You are driving on a curved highway on-ramp. Assuming you are driving at the speed limit of 70 km/h, which is the correct statement? A You are driving at a velocity of 70 kah. C Your velocity is constantly changing as you drive along the ramp. B Your speed is constantly changing as you D None of the above. drive along the ramp