Question

the equation of a wave is y=10sin(2πt/45+alpha). if the displacement is 5 centimetre at t = 0 what is the total phase at t = 7.5 second

Answer 1

In last step I forgot to put Value 45

So from last step

We have

=2 pi 7.5/45+ pi/6

=15 pi/45 +pi/6

=Pi/3+pi/6

=(2pi+pi)/6

=3pi/6

=pi/2



This is ur ans hope it will help you in case of any doubt comment below

Answer 2

Explanation:

hope it helps thank you