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yan [13]
3 years ago
6

for a short time after a wave is created by wind, the height of the wave can be modeled using y = a sin 2π/T, where a is the amp

litude and T is the period of the wave in seconds. How many times over the first 5 seconds does the graph predict the wave to be 2 feet height?
Mathematics
2 answers:
nadezda [96]3 years ago
8 0
I think the wave is 2x)t
pentagon [3]3 years ago
5 0

Answer:

2 times

Step-by-step explanation:

We are given that the height of the wave can be modeled using

y=asin \frac{2\pi}{T}

We have to find the value of amplitude

T=5 seconds

Height =y=2 feet

Where a = Amplitude

Substitute the values then we get

2 =a sin \frac{2\times 180}{5}

Because pi=180 ^{\circ}

2=a sin 72^{\circ}

2= a\times 0.952[/txe][tex]a=\frac{2}{0.952}

a=2.1

Amplitude =2 feet

Hence, the graph is 2 times over the first 5 seconds when the wave to be 2 feet height.

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