
Suzy E.
asked 04/21/22Hi I need help with this questions plz and thx u :)
For the following triangle, find angle C, a=4, b=5, c=7
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1 Expert Answer

Jon S. answered 04/21/22
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Patient and Knowledgeable Math and English Tutor
Use law of cosines:
c^2 = a^2 + b^2 - 2abCosC
plug in a, b and c, and solve for angle C using arc Cosine.
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Brenda D.
04/21/22