jika sudut lancip alpha memenuhi sin alpha = 1/3√3, nilai tan (π/2-alpha) + 3 cos alpha
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Pertanyaan
jika sudut lancip alpha memenuhi sin alpha = 1/3√3, nilai tan (π/2-alpha) + 3 cos alpha
1 Jawaban
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1. Jawaban Pitt1504
A (alpha) sudut lancip, maka A < 90
sin A = 1/3√3, jd A = 60
tan (π/2-A) = tan (90-60)= tan 30 = 1/3√3
3 cos A = 3 cos 60 = 3 x 1/2= 3/2
1/3√3 + 3/2 = (2√3 +9)/6