tkellar14 tkellar14

06-08-2021
Mathematics

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4. If triangle ABC has the following measurements, find the measure of side c:
a = 5
B = 7
C = 42 degrees

4 If triangle ABC has the following measurements find the measure of side c a 5 B 7 C 42 degrees class=

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sqdancefan sqdancefan

06-08-2021

9514 1404 393

Answer:

c ≈ 4.69

Step-by-step explanation:

The Law of Cosines is used for the purpose. It tells you ...

c² = a² +b² -2ab·cos(C)

c² = 5² +7² -2·5·7·cos(42°) ≈ 21.9799

c ≈ √21.9799 ≈ 4.688

The measure of side c is about 4.69 units.

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