Recent content by misplaced1

Thank you for your help. I think that I was over-thinking the question. It really is so much simpler than I was making it out to be.

Homework Statement A box is dragged 16 m across a level floor by a 75N force at an angle of 35 degrees to the floor . It is then dragged by the same force 8m up a ramp inclined at an angle of 20 degrees to the floor. Determine the total work done by the force. Homework Equations W= F(d)Cosθ...

Thanks for your reply. In answer to "Notice that 165 degrees = 180 degrees - 15 degrees. Does that suggest an identity that you could use to get the exact value of tan(165 degrees)?", I asked someone about this and they explained to me that I could use the special triangle angles, but just use...

1. I don't understand coumpound angle formulae, for example sin(x+y), sin(x-y) etc. I'm supposed to solve using angles in the special triangles--so I use angles like 45, 30, 60, or those angles converted into radians--and add them to get the answer. For example: sin15 would be solved using...