Find the amplitude of a sinusoid given frequency and time after zero-crossing

[jnuz73hbn]

Homework Statement

What is the elongation of a sine wave if the amplitude is 12cm and the frequency is 12Hz after 0.04 s after the zero crossing

Relevant Equations

s=smaxsin (2π f t)

2π f t = 6,28  12  0,04 = 3,0144

 

[berkeman]

Welcome to PF.

What is the sine of 3.01 radians? How does that help you to get to your solution?

 

[jnuz73hbn]

Welcome to PF.

What is the sine of 3.01 radians? How does that help you to get to your solution?

thanks I have it now :)