3 years ago

X² = 30² +21² -2(30)(21) Cos 123°

Mathematics

1 answer:

katrin [286]3 years ago

8 0

Answer:

x ≈ 44.69

Step-by-step 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!

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