三角 计算sim(-31/6π)
问题描述:
三角 计算sim(-31/6π)
答
sim(-31/6π)=sin(-31/6π+6π)=sin(5π/6)=sin(π-π/6)=sin(π/6)=0.5
三角 计算sim(-31/6π)
sim(-31/6π)=sin(-31/6π+6π)=sin(5π/6)=sin(π-π/6)=sin(π/6)=0.5