The largest deviation of a variable from its mean value is referred to as amplitude. The sine and cosine functions can be calculated using the amplitude formula. A is the symbol for amplitude. The sine (or cosine) function can be written as follows:
x = A sin (ωt + ϕ) or x = A cos (ωt + ϕ)
Here,
- x = displacement of wave (meter)
- A = amplitude
- ω = angular frequency (rad/s)
- t = time period
- ϕ = phase angle
The amplitude formula is also expressed as the average of the sine or cosine function’s maximum and minimum values. The absolute value of the amplitude is always used.
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