m=sin29+cos29=√2(sin29cos45+cos29sin45)=√2sin(29+45)=√2sin74
n=2√2sin31cos31=√2sin(31*2)=√2sin62
p=(√3-1)/2=sin60-cos60=√2(sin60cos45-cos60sin45)=√2sin(60-45)=√2sin15
所以p
m=sin29+cos29=√2(sin29cos45+cos29sin45)=√2sin(29+45)=√2sin74
n=2√2sin31cos31=√2sin(31*2)=√2sin62
p=(√3-1)/2=sin60-cos60=√2(sin60cos45-cos60sin45)=√2sin(60-45)=√2sin15
所以p