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Mathematics, 29.09.2019 00:30 dad46

Look at the proof showing sin^4 x = 3 - 4 cos 2x + cos 4x / 8. which expression will complete the fourth step of the proof ?


Look at the proof showing sin^4 x = 3 - 4 cos 2x + cos 4x / 8. which expression will complete the fo

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Look at the proof showing sin^4 x = 3 - 4 cos 2x + cos 4x / 8. which expression will complete the fo...
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