How to Find the exact value of each trigonometric ratio: 1) sin (300°) 2) cos (120°) can it be done with a calculator, or would I have to do the math, and
![Trigonometric Ratios with a Calculator: Lesson Instructional Video for 9th - 12th Grade | Lesson Planet Trigonometric Ratios with a Calculator: Lesson Instructional Video for 9th - 12th Grade | Lesson Planet](http://content.lessonplanet.com/resources/thumbnails/342877/large/bwluav9tywdpy2symde4mdiyoc0ymtaxni12n3b5btmuanbn.jpg?1519830951)
Trigonometric Ratios with a Calculator: Lesson Instructional Video for 9th - 12th Grade | Lesson Planet
![Tangent Ratio Formula & Examples | How to Find the Tangent Ratio of a Triangle - Video & Lesson Transcript | Study.com Tangent Ratio Formula & Examples | How to Find the Tangent Ratio of a Triangle - Video & Lesson Transcript | Study.com](https://study.com/cimages/videopreview/9cd9enie50.jpg)