What is the Law of Cosines?

Question

explain the Law of Cosines? what do you mean by it

Answer 1

The Law of Cosines states that in a triangle, the square of any side is equal to the sum of the squares of the other two sides minus twice the product of those sides and the cosine of the angle between them.

Answer 2

The Law of Cosines states that in any triangle, the square of the length of any side is equal to the sum of the squares of the lengths of the other two sides, minus twice the product of those sides and the cosine of their included angle. It can be written as: a^2 = b^2 + c^2 - 2bc cos A.

Answer 3

The Law of Cosines is a mathematical formula used to determine the length of a side or measure of an angle in a triangle. It states that the square of the length of one side of a triangle is equal to the sum of the squares of the other two sides minus twice the product of those two sides and the cosine of the included angle. In mathematical notation:

c² = a² + b² - 2ab cos C

where c is the length of the side opposite angle C, and a and b are the lengths of the other two sides.