A classic Pythagorean triple, 3-4-5. To solve for a hypotenuse (the longest side), you must start with a right triangle, which contains a 90-degree angle. From there, you square the length of each ...

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles. Trigonometry is found all throughout geometry, as every straight-sided shape may be ...

I'm talking about trigonometry, of course: that bastion of angles and triangles that is essential to calculating velocity, momentum, and much more.

GCSE Edexcel Trigonometry - Edexcel Calculating an angle The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles. The sine and ...