Jika alpha+beta+gamma=180, buktikanlah bahwa: sin^2

Saluran Edukasion 2024-04-23T15:59:08

Jika alpha+beta+gamma=180, buktikanlah bahwa: sin^2 alpha+sin^2 beta+sin^2 gamma=2 (1+cos alpha cos beta cos gamma)
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Jika alpha+beta+gamma=180, buktikanlah bahwa: sin^2 alpha+sin^2 beta+sin^2 gamma=2 (1+cos alpha cos beta cos gamma)