0<=θ <pi,cos 2θ + √ 3 sin 2θ ≧ 1 https://www.wolframalpha.com/input?i=0%3C%3D%CE%B8+%3Cpi%2Ccos+2%CE%B8+%2B+%E2%88%9A+3+sin+2%CE%B8+%E2%89%A7+1&lang=ja グラフを表示するため cos 2θ + √ 3 sin 2θ ≧ 1 https://www.wolframalpha.com/input?i=cos+2%CE%B8+%2B+%E2%88%9A+3+sin+2%CE%B8+%E2%89%A7+1&lang=ja
0<=θ <pi,cos 2θ + √ 3 sin 2θ ≧ 1
https://www.wolframalpha.com/input?i=0%3C%3D%CE%B8+%3Cpi%2Ccos+2%CE%B8+%2B+%E2%88%9A+3+sin+2%CE%B8+%E2%89%A7+1&lang=ja
グラフを表示するため
cos 2θ + √ 3 sin 2θ ≧ 1
https://www.wolframalpha.com/input?i=cos+2%CE%B8+%2B+%E2%88%9A+3+sin+2%CE%B8+%E2%89%A7+1&lang=ja