Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle.
- Right-Angled Triangle
A right-angled triangle (also called a right triangle) is a triangle with a right angle (90°) in it.
- A name to each side of a right triangle
- Sine, Cosine and Tangent
- Sine
Example 1.
- 30°, 150°
- walking distance is 100m
- Height : 1/2 * walking distance
Example 2.
- 90°
Example 3.
https://m.blog.naver.com/limchung90/221791718026
https://www.youtube.com/watch?v=VMrT1wwXxY0&list=PLBPUzs26iQhpxyBcHSs-dI9pW19jaslcq&index=7
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