Recent content by Propaganda777

hey it works, thanks you:)

I did, but it comes out to a wrong answer: F= (m1+m2)a m2=(F-m1)/a m2=41.2kg The answer should be 37 kg, right?

You are pulling your little sister on her sled acroos an icy(frictionless) surface. When you exert a constant horizontal force of 110 N, the sled has an acceleration of 2.5 m/s^2. If the sled has a mass of 7 kg, what is the mass of your little sister? Heres how I attempted it: F=110N A=2.5...

ok I think I got it, Sin^2 theta = (.71/1)^2 Cos^2 theta = (.71/1) ^2 (.71/1)^2 + (.71/1)^2 = 1.0082 (about 1) thanks for the help:)

If I remember correctly, angles play a role in solving for two variables, right

its been a while since I used the pythagorean theorem so... x^2+y^2 = 1 now where would I go from here since there are two variable to solve for? lol I'm just forgetting all the basics.

okay so Sin theta = y/r and Cos theta = x/r correct?

we just learned angle theta today, and as ignorant as this sounds what exactly is an angle theta. I understand where it is on the right triangle, but does it have an exact amount of degrees and how does it relate to the problem in helping to solve it.

My instructor said solve it any way possible. Could someone show me how to work it out using the pythagorean theorem, I'm still very lost at this.

Homework Statement Prove/Show Sin(squared) theta + Cos(squared) theta = 1 I'm new to vectors and am having difficulty solving this, any help would be greatly appreciated. Thanks.