Save guides, add subjects and pick up where you left off with your BBC account. The sides of right-angled triangles are labelled opposite, hypotenuse and adjacent. Trigonometry explores the ...

Trigonometry close trigonometryThe 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 relationships between the sides and angles of triangles ... deck and rigging rope form a right triangle. If we know how far the rope is ...

In right-angled triangles the square on the side subtending the right angle is equal to the squares on the sides containing the right angle. Many triangles in real life are not right angled.

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond ...