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Applying the law of cosines to a triangle to find the missing length

Learn how to solve for the lengths of the sides and the measures of the angles of a triangle using the law of cosines. The ...
BBC

Finding the length of a side in a right-angled triangle

Trigonometry can be used to find the length of a side in a triangle. Trigonometry close trigonometryThe study of sides and angles in triangles. can be used to find a missing side in a right-angled ...
BBC

Types of triangle

A triangle is a polygon. It is a closed 3-sided shape made up of straight lines. The ‘tri-’ part of the word triangle means three. A triangle has 3 sides and 3 angles. Interior angles are the angles ...
YouTube on MSN

Using law of cosines to find our missing length of a triangle

Learn how to solve for the lengths of the sides and the measures of the angles of a triangle using the law of cosines. The law of cosines is used in determining the lengths of the sides or the ...