tt = 0:.01:5;
y1 = sin(pi*tt);
y2 = cos(pi*tt);
figure
p1 = plot(tt,y1,'linewidth',1.5); grid on, hold on
p2 = plot(tt,y2,'linewidth',1.5);
set(gca,'TickLabelInterpreter','latex');
set(gca,'fontweight','bold','fontsize',12)
legend([p1 p2],{'\textbf{Sin}','\textbf{Cos}'},'fontsize',12,'interpreter','latex','location','northeast')
xlabel('\bf{Time [sec]}','fontsize',14,'interpreter','latex')
ylabel('\bf{Amplitude [m]}','fontsize',14,'interpreter','latex')