√1-2sin(3-π)cos(3-π)化简

问题描述:

√1-2sin(3-π)cos(3-π)化简
全都是在根号下

√[1-2sin(3-π)cos(3-π)]
=√[1-2sin3cos3]
=√(sin3-cos3)²
=|sin3-cos3|
∵π/2