BBC2 年
Introduction to trigonometry for right-angled triangles
The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores the relationship between sides and angles in right-angled triangles. The hypotenuse is the ...
Live Science on MSN2 个月
High school students who came up with 'impossible' proof of Pythagorean theorem discover 9 ...
Mathematicians had long thought that using trigonometry to prove the theorem was unworkable, given that the fundamental ...