pake cara yah, cos 225° =
Matematika
riska240201
Pertanyaan
pake cara yah, cos 225° =
2 Jawaban
-
1. Jawaban VianaSujianti
Cos 225°
= cos (180° + 45°)
= - cos 45°
= - 1/2 √2
rumusnya : cos ( 180° + a ) = - cos a -
2. Jawaban r1m4hsy1
Cos (180+45) = -cos 45derajat = -1/2 akar 2