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lina2011 [118]
3 years ago
5

Cos(65)= square root 1+cos(130)/2

Mathematics
1 answer:
Anarel [89]3 years ago
6 0

Answer:


Step-by-step explanation:

Cos(65°) = √(1 + cos(130°)) / 2

0.42=√(1 - 0.64)/2

0.42=√(0.36)/2

0.42²=√0.18²

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