For any triangle, the Law of Cosines says:

c

Where:

• a, b and c are the three sides of the triangle, and

• C is the angle opposite side c

It helps us solve some triangles.

c

^{2}= a^{2}+ b^{2}− 2ab cos(C)Where:

• a, b and c are the three sides of the triangle, and

• C is the angle opposite side c

It helps us solve some triangles.

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