function text541

x=1:0.1*pi:2*pi;
y=sin(x);
plot(x,y)
xlabel('x(0-2\pi)','fontweight','bold');
ylabel('y=sin(x)','fontweight','bold');
title('正弦函數(shù)','fontsize',12,'fontweight','bold','fontname','隸書')
text(3*pi/4,sin(3*pi/4),'\leftarrowsin(t) = .707','FontSize',16)
text(pi,sin(pi),'\leftarrowsin(t) = 0','FontSize',16)
text(5*pi/4,sin(5*pi/4),'sin(t) = -.707\rightarrow','HorizontalAlignment','right','FontSize',16)