sinx-sin(3π/2-x)
=sinx+cosx
=√2sin(x+π/4)
=根号2
sin(x+π/4)=1
x=2kπ+π/4,或,x=2kπ+3π/4
x=2kπ+π/4 时
tanx+tan(3π/2-x)=tanx+cotx=1+1=2
x=2kπ+3π/4 时
tanx+tan(3π/2-x)=tanx+cotx=-1-1=-2
sinx-sin(3π/2-x)
=sinx+cosx
=√2sin(x+π/4)
=根号2
sin(x+π/4)=1
x=2kπ+π/4,或,x=2kπ+3π/4
x=2kπ+π/4 时
tanx+tan(3π/2-x)=tanx+cotx=1+1=2
x=2kπ+3π/4 时
tanx+tan(3π/2-x)=tanx+cotx=-1-1=-2