The unit we started this week was trigonometry. The main idea of this unit is to find side lengths and angles of right triangles when just given either the reference angle and or side lengths. The thing that was most interesting to me was finding missing side lengths of right angle triangles. When doing these questions the first 2 thing you want to do are label the triangle and have SOH CAH TOA written down as a referance. The next this is you need to figure out what one out of sin, cos, and tan uses the letters you need. In this case we are looking for what one used A and H, this would be CAH so therefor we are using cos.The next step is to just write your equation and solve,making sure to isolate the variable in this case its a. In the question I chose to show the variable is on the bottom, which means we have to reciprocate the fraction, therefor we have to do that to the other side also. Putting the cos and 39 degrees over one and then flipping it. Because what you do to one side you have to do to the other. (use the photos below to understand better)
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