Hey, I have a question I'm stuck on for my grade 12 physics class. There is a block being pulled by tension over a triangle essentially that's at a degree of 35.7 (right angle triangle). I understand the whole question but I don't understand how to find how much pull the block has backwards of it's acceleration? It says it's the mass x gravity x sin 35.7. Why is sin theta added in there? Sorry if this is difficult to understand, if I could draw the picture, this would be so much easier. Thanks if anyone understands my question/can help me out.