Mathematics
Senior High
(2)なのですが、なぜ2θ+π/6=π/6は含まれないのですか?
□ 27900 <2のとき、次の方程式、不等式を解け。
(1) cos(20-5) = 1/2
3
*(3)
cos(20+7)<-√3
1
*(2) sin(
sin (20+5)=√2
tan (20+)²-√3
√3
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