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Mathematics, 07.12.2021 14:00 tucecoskun

Hãy sắp xếp các tỉ số lượng giác sau theo thứ tự tăng dần: a/ sin780; cos240; sin400; cos870, sin 420

b/ tan120; cot350; tan810; cot260, cot17 0.

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Hãy sắp xếp các tỉ số lượng giác sau theo thứ tự tăng dần: a/ sin780; cos240; sin400; cos870, sin...
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