Mathematics
Senior High
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⑴のθの求め方と⑵の求め方がわかりません
50≤02 のとき, 次の方程式を解け。
(1) sin 20 + sin0 = 0
2sinocoso+sino=0
gino(2cos+1)=0
sino=oまたは2cs010
sino=onとき=
COSA=-1/2のときQ=
3 cos(
(
(2) cos20-sin0=1
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ありがとうございます!