how to verify that the phase of the two signals x1(t) and x2(t) is correct at t = 0, and also verify that each one has the correct maximum amplitude.

%%task4_2

clc

clear all

close all

taxis= linspace(-10,10, 200);

taxis=taxis/20;

A=5;

f=15; %15 hertz sinusoids

x1= A* cos((2*pi*f*taxis)+0.5*pi);

x2= A* cos((2*pi*f*taxis)-0.25*pi);

x3= A* cos((2*pi*f*taxis)+0.4*pi);

x4= A* cos((2*pi*f*taxis)-0.9*pi);

x5=x1+x2+x3+x4;

% phase difference measurement

phsdifference = phasedifference(x1, x5);

phsdifference = rad2deg(phsdifference);

% display the phase difference

disp(['Phase difference of x5 from x1= ' num2str(phsdifference) ' deg'])

figure (1)

subplot(5,1,1);

plot(taxis,x1, 'r');

title('sinusoid x1 with 15 hertz');

xlabel('Time (s)');

ylabel('Amplitudes');

legend('x1');

subplot(5,1,2);

plot(taxis, x2, 'k');

title('sinusoid x2 with 15 hertz');

xlabel('Time (s)');

ylabel('Amplitudes');

legend('x2');

subplot(5,1,3)

plot(taxis, x3, 'g');

title('sinusoid x3=(x1+x2) with 15 hertz');

xlabel('Time (s)');

ylabel('Amplitudes');

legend('x3');

subplot(5,1,4)

plot(taxis, x4, 'b');

title('sinusoid x4 with 15 hertz');

xlabel('Time (s)');

ylabel('Amplitudes');

legend('x4');

subplot(5,1,5)

plot(taxis, x5, 'm');

title('sinusoid x5 with 15 hertz');

xlabel('Time (s)');

ylabel('Amplitudes');

legend('x5');

Answer 1

[SaiDileep Kola]

You may get some help with discussion here