=\sin(\frac{%CF%80}{2}-x)&line2=\mathrm{Solution:\:}x=\frac{%CF%80}{4}%2B%CF%80n "sin(x)=sin(pi/2-x)")
sin(x)=sin(pi/2-x)
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&line2=\mathrm{Solution:\:}e^{\frac{%CF%80}{2}} "e^{pi/2}sin(pi/2)")
e^{pi/2}sin(pi/2)
