sin (-225°) + cos 270°
Matematika
ramadhandeyanp01wjl
Pertanyaan
sin (-225°) + cos 270°
1 Jawaban
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1. Jawaban Enrico08
cos 270 = 0
sin (-225) = -sin 225
= -sin(180+45) = sin 45 = (akar 2)/2
sin (-225) + cos 270 = (akar 2)/2