MATLAB: How to generate sinusoidal sine wave using matlab

MATLABMATLAB and Simulink Student Suitesignal processing

I need to plot a sine wave with a frequency of 25 amplitude of 5 time of 0:0.1:1 how do i go about this, thanks

T = 0:0.001:1; % your time vector have a very low sampling frequency

Z = 5*sin(25*2*pi*T);

plot(T, Z)

t=0:0.001:1; freq = 10; signal = sin( freq * 2 * pi * t); plot(t, signal);

If you are talking about plotting a half cosine wave you could do something like this:

t=-pi/2:0.0001:pi/2;
plot(t,cos(t))