sin ( phi per 2 + x) = cos x
Matematika
yumi16
Pertanyaan
sin ( phi per 2 + x) = cos x
1 Jawaban
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1. Jawaban Cadilac
sin (π/2 +x) = cos x
sin π/2.cos x + cos π/2.sin x = cos x
1/2√2.cos x + 1/2√2.sinx = cos x
1/2√2(cosx+sinx)= cos x
1/2√2(cosx+sinx)-cos x = 0