Trigonometry close trigonometry The study of sides and angles in triangles. can be used to find a missing angle in a right-angled triangle when two sides are known.. An understanding of the three ...

Trigonometry is a branch of mathematics that studies ... We can, however, find the angle of the rigging rope, and use it to ... the side opposite to the right angle is called the hypotenuse ...

By using the Law of Sines, and avoiding the Pythagorean theorem’s trig identity (sin²α + cos²α = 1), Johnson and Jackson successfully proved the theorem without resorting to circular ...

Learn how to find the angles in right-angled triangles with this BBC Bitesize Maths article. For students between the ages of 11 and 14.