Jika sin a+sin b=k dan cos a+cos b=m,
Saluran Edukasion 2024-06-25T22:51:43
Jika sin a+sin b=k dan cos a+cos b=m, buktikan:k+m=2cos(1/2(a-b))[sin(1/2(a+b))cos(1/2(a+b))]
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Jika sin a+sin b=k dan cos a+cos b=m, buktikan:k+m=2cos(1/2(a-b))[sin(1/2(a+b))cos(1/2(a+b))]