来自李力沛的问题
计算锐角三角函数（1）sin^230度+cos^230度=____+_____=_____(2)sin^245度+cos^245度=_____+_____=_____(3)sin^260度+cos^260度=_____+____=___猜想：当角A为锐角时,sin^2A+cos^2A=_____
计算锐角三角函数
（1）sin^230度+cos^230度=____+_____=_____
(2)sin^245度+cos^245度=_____+_____=_____
(3)sin^260度+cos^260度=_____+____=___
猜想：当角A为锐角时,sin^2A+cos^2A=_____
1回答
2020-08-02 10:12