Presentation
https://www.khanacademy.org/math/geometry/hs-geo-trig/hs-geo-solve-for-a-side/e/trigonometry_2
https://cdn.kutasoftware.com/Worksheets/Alg2/Right%20Triangle%20Trig%20Missing%20Sides%20and%20Angles.pdf
https://www.neisd.net/cms/lib/TX02215002/Centricity/Domain/4560/practice%20right%20triangle%20trig4.pdf