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Aliun [14]
3 years ago
6

Please help, trigonometry is hard for me

Mathematics
1 answer:
Vsevolod [243]3 years ago
6 0

Because the cos theta < 0 then theta must be an obtuse angle

so a^2 + b^2 < a^2

C

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the topmost one maybe?

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2 years ago
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3 years ago
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