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Mathematics, 23.10.2020 20:50 benbeltran9030

Which expression is equal to -1? A. cot π/4 B. sin π/2 C. sin 3π/2 D. tan 5π/4

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Which expression is equal to -1? A. cot π/4 B. sin π/2 C. sin 3π/2 D. tan 5π/4...
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