Posts by ฟังก์ชันตรีโกณมิติ
English: Elementary trigonometry is based on this assert: if two
English: Elementary trigonometry is based on this assert: if two right triangles have equal acute angles, they are similar, so their side lengths are...
English: Elementary trigonometry is based on this assert: if two right triangles have equal acute angles, they are similar, so their side lengths are...
Trending Topics
© 2015