Instead of moving on we decided to spend one more day reviewing the content from yesterday. These problems are a bit challenging. We first have to use the given trig ratios and their signs positive/negative to determine which quadrant we are in. Once Matthew did that, he was able to label the sides and use SOHCAHTOA to determine the trig ratios. Matthew asked me WHY the signs are positive or negative. We went back to discuss how in the coordinate plane, depending on where the point is, the x's or y's will be positive if they're up or right, but negative if they're down or left. Matthew reached his Ah-ha moment in understanding why the signs are what they are.