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X² = 30² +21² -2(30)(21) Cos 123°
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X² = 30² +21² -2(30)(21) Cos 123°

User Craftrac
by
4.6k points

1 Answer

3 votes

Answer:

x ≈ 44.69

Explanation:

x² = 30² +21² -2(30)(21)Cos123°

x² = 900 + 411 - 1260cos123°

x² = 1311 - 1260cos123²

~Take square root of both sides

x = √1997.245184111

x ≈ 44.69

Best of Luck!

User Sebastian Utz
by
4.2k points
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