Notice the triangle image above, the KLM triangle is an equilateral triangle. We determine trigonometric ratio values for every 30° and 60°.
Furthermore our focus is the MPL triangle. With the phytagoras theorem, obtained the length of MP = √3. It is therefore applicable:
- sin 30° = 1/2
- cos 30° = √3/2
- tan 30° = √3/3
- sin 60° = √3/2
- cos 60° = 1/2
- tan 60° = √3
For more information, the value of any trigonometric ratio at any special angle of 0 °, 30 °, 45 °, 60 °, 90 °, up to 360 ° can be seen in the table below:
Table of Trigonometry Comparison Scores In Quadran I, II, III, and IV
Similarly this article.
Sorry if there is a wrong word.
The end of word wassalamualaikum wr. wb
Referensi :
- Book of math senior high school class 10 Semester 2
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