ax1 = subplot(2,1,1)
H1=plot(x,y1);
hold on
H2=plot(x,y2);
set(H1,'color','r','linewidth',2)
set(H2,'color','g','lineStyle','--','linewidth',3)
set(ax1,'xlim',[0 360])
set(ax1,'xtick',[0:30:360])
xlabel('degrees')
legend('sine','cosine')
ax2=subplot(2,1,2)
plot(x,y3)
set(ax2,'xlim',[0 360],'xtick',[0:30:360])
set(ax2,'ylim',[-60 60],'ytick',[-60:20:60])
set(ax2,'linewidth',2)
xlabel('degrees')
legend('tangent')
set(ax2,'fontsize',12)
set([ax1, ax2],'linewidth',2)