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Korvikt [17]
3 years ago
11

Please help me with trigonometry and law of sines I’m being timed and really need the help

Mathematics
1 answer:
Usimov [2.4K]3 years ago
8 0

Step-by-step explanation:

cosA = AC² + BC²- AB² / 2 • AC • BC

cos A = 13.5²+23.9²-12.7²/2• 13.5 • 23.9

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