Tunjukkan bahwa: cos alpha=2 cos^2 (1/2 alpha) - 1=1-2sin^2
Saluran Edukasion 2024-01-22T18:56:43
Tunjukkan bahwa: cos alpha=2 cos^2 (1/2 alpha) - 1=1-2sin^2 (1/2 alpha)
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Tunjukkan bahwa: cos alpha=2 cos^2 (1/2 alpha) - 1=1-2sin^2 (1/2 alpha)