Jika sin alph+ sin beta= k dan cos alpha + cos beta = m,

Saluran Edukasion 2024-06-09T22:41:43

Jika sin alph+ sin beta= k dan cos alpha + cos beta = m, buktikan: k^2+m^2=2[1+cos(alpha-beta)]
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Jika sin alph+ sin beta= k dan cos alpha + cos beta = m, buktikan: k^2+m^2=2[1+cos(alpha-beta)]