7
QuizMultiple Choice
Applying Vectors in the Plane
Question 7 of 10 • MO-Algebra II A
Eddie solved for the length of side c in using the Law of Cosines formula, . Sophia wants to solve for the side length of b. Which equation could Sophia use to solve for the side length of b, given the other two side lengths and the measure of their included angle?
Answer
A
Square of b = Square of a + Square of c minus 2ac cosine C
B
Square of b = Square of a + Square of c minus 2ab cosine C
C
Square of b = Square of a + Square of c minus 2ab cosine A
D
Square of b = Square of a + Square of c minus 2ac cosine B