已知sin(π/2+α)-cos(3π/2-α)=1/5(π/2扫码下载作业帮拍照答疑一拍即得
问题描述:
已知sin(π/2+α)-cos(3π/2-α)=1/5(π/2 扫码下载作业帮
拍照答疑一拍即得
答
已知sin(π/2+α)-cos(3π/2-α)=1/5(π/2 扫码下载作业帮
拍照答疑一拍即得