Mathematics
Senior High
Solved
4番が分からないです。宜しくお願いします!
279 0S0<2π のとき, 次の方程式, 不等式を解け。
r com 20-号)-
19) cos(20+号)<-
*(2) sin(20+)=
1
1
COs|20
3
2
2
r tan (20+ 号)=-
V3
1。
3
4
2
3
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