During the seventh week of Foundations of Mathematics and Pre-Calculus, I learned how to use a calculator to find the value of trigonometric ratios. To find trigonometric ratios, you first must have a calculator, and then it must be in degree mode. Then you put your number in your calculator, and choose which ratio you are going to use. On different calculators, the steps of finding the ratio could be reversed to ratio then number. If your number has many decimal places, the most accurate approximation can be to four decimal places. Using this simple method can help you find angles of sides easily on a right triangle. The three ratios I learned were sine, cosine, and tangent. A helpful acronym that is useful is SOHCAHTOA.
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