Mathematics
Senior High
最初のところを負の状態にしても可ですか？
③7 3040≦x<2πのとき, 次の不等式を解け。
*(1)
cosx</3 sinx
(2)
304 (1) cosxSV3sinx 1D
√3 sinx-cos x 20
左辺の三角関数を合成すると
2sin(x-20
• To sind + cost so
Bhia (α + N) so
d
şo
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