Search results

^title, so after I tried writing a few practice creative writing pieces, I found that I have an image of the scenary in my head but lack the vocabulary to describe the image. I find it difficult to find the right word for certain objects, for example names of specific hat types, describing a...

Can anyone help prove these identities? Thanks 1. (Sin(2x)+1)/cos(2x) = (cos(x) + sin(x))/cos(x) - sin(x) 2. cos(4x) = 8cos^4x - 8cos^2x + 1 3. (1-cos(x))/sin(x) = tanx/2

I have an upcoming 3U test on trig and I'm not too sure which of the 3 cos2x expansions to use and when. e.g cos2x = cos^2x - sin^2x, 1-2sin^2x, 2cos^2x - 1 Can someone explain in what situation would I use one expansion over the other? Example question: 1+cos(180degree + 2x) How come to...

This might be a stupid question but can anyone explain what the letters represent for the formulas used in the moving about topic? I can't seem to remember them or don't know what they represent. eg: Ft = mv - mu, W = Fs, V^2 = u^2 + 2as, p=mv, s=ut + 1/2 at^2