cos 45²+2 cos 60²+sin 45² =
Matematika
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Pertanyaan
cos 45²+2 cos 60²+sin 45² =
1 Jawaban
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1. Jawaban chandra4141
= [(1/2)akar 2]^2 + (1/2)^2 + [(1/2)akar 2)]^2
= 2/4 + 1/4 + 2/4 = 5/4