化简,cos²(-α)-tan(360°+α)/sin(-α)

来源：学生作业帮助网编辑：作业帮时间：2024/05/05 08:23:45

化简,cos²(-α)-tan(360°+α)/sin(-α)
化简,cos²(-α)-tan(360°+α)/sin(-α)

化简,cos²(-α)-tan(360°+α)/sin(-α)
cos^2(-α)-[tan(360°+α)/sin(-α)]
=cos^2(α)+tanα/sinα
=cos^2(α)+1/cosα