Suppose a triangle has two sides of the length of 3 and 4 and that the angle between the two sides is pi over 3. What is the length of the third side of the triangle?

Question

jdoe0001 · Answer

have you covered the Law of Cosines yet?

jdoe0001 · Answer

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$\bf \textit{Law of Cosines} = c^2 = a^2+b^2-(2ab)cos(\measuredangle C)\ \quad \
\implies c = \sqrt{a^2+b^2-(2ab)cos(\measuredangle C)}$

anonymous · Answer

yeah, im doing the law of cosines now. I just wasn't sure how to set It up. thank you!