a=pi/2; %Last Degree
b=10;   %Last Time
t=[0:0.1:10];
%y=a.*t.^3+b.*t.^2+c.*t+d;
y=6*a/b^5.*t.^5-15*a/b^4.*t.^4+10*a/b^3.*t.^3;
y1=y*180/pi;
%y=a.*t.^5-b.*t.^4+c.*t.^3;
plot(t,y1);