Matrix dimensions must agree

g=9.81;
Vo=10;
ang= [30 45 60 80];
t=sqrt(sin(ang).^2-0.5*sin(ang))
t=[t -t];

x=Vo*(cos(ang).*t) WHY I KEEP GETTING "MATRIX DIMENSIONS MUST AGREE"

y = Vo*(sin(ang).*t)-(0.5*g*(t^2));
tmax=2*Vo/g*sin(ang);
y=y(x);

Answer 1

[madhan ravi]

• First for some reason you make t twice as large than it previously was

t=[t -t] % see here

• And then you try to multiply it with ang which is half of t.
• numel(t) should be equal to numel(ang) to prevent that error.

[Salma A Pantaleon Damaso]

I was trying to put t= sin(ang)± (sqrt sin(ang)−0.5)