What Is the Law of Cosines?
A) $a^{2}=b^{2}+c^{2}-2 b c \cos A$

question 13

Multiple Choice

What is the Law of Cosines?

• A) \( a^{2}=b^{2}+c^{2}-2 b c \cos A \)
• B) \( a^{2}=b^{2}+c^{2}+2 b c \cos A \)
• C) \( a^{2}=\left(b^{2}+c^{2}\right) \times 2 b c \cos A \)
• D) \( a^{2}=\left(b^{2}+c^{2}\right) \div 2 b c \cos A \)

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