In order to apply the law of cosines to find the measure of an interior angle, it is enough to know which of the following?

A. The lengths of all three sides of the triangle

B. The area of the triangle

C. At least two of the angles of the triangle and the length of one of its sides

Question

In order to apply the law of cosines to find the measure of an interior angle, it is enough to know which of the following?

A. The lengths of all three sides of the triangle

B. The area of the triangle

C. At least two of the angles of the triangle and the length of one of its sides

anonymous · Answer

A?

anonymous · Answer

A

the formula is: a^2=b^2+c^2-2bc*cosA