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Mathematics, 28.12.2019 05:31 vrybascos

If the sin 30° is one half, then the cos ° = 60°; one half 30°; square root 2 over 2 60°; square root 3 over 2 30°; 1

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If the sin 30° is one half, then the cos ° = 60°; one half 30°; square root 2 over 2 60°; square...
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