The Law of Cosines is used to find the angle in a triangle when we know the lengths of all three sides. The formula is c² = a² + b² - 2abcosC, where a, b, and c are the sides of the triangle, and C is the angle we are trying to find.

In this case, we have:

122 = 52 + 132 - 2(5)(13)cosC

We can see that the sides a and b are 5 and 13, and side c is 12. Therefore, we are solving for angle C.

So, the angle that correctly completes the law of cosines for this triangle is C.

Question

The Law of Cosines is used to find the angle in a triangle when we know the lengths of all three sides. The formula is c² = a² + b² - 2abcosC, where a, b, and c are the sides of the triangle, and C is the angle we are trying to find.

In this case, we have:

122 = 52 + 132 - 2(5)(13)cosC

We can see that the sides a and b are 5 and 13, and side c is 12. Therefore, we are solving for angle C.

So, the angle that correctly completes the law of cosines for this triangle is C.

Knowee AI · Accepted Answer

The Law of Cosines is used to find the angle in a triangle when we know the lengths of all three sides. The formula is c² = a² + b² - 2abcosC, where a, b, and c are the sides of the triangle, and C is the angle we are trying to find.

In this case, we have:

122 = 52 + 132 - 2(5)(13)cosC

We can see that the sides a and b are 5 and 13, and side c is 12. Therefore, we are solving for angle C.

So, the angle that correctly completes the law of cosines for this triangle is C.

Select the angle that correctly completes the law of cosines for this triangle.52 + 132 – 2(5)(13)cos ___ = 122A.90°B.67°C.180°D.23°

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