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Kai is swinging on a trapeze in a circus show. The horizontal distance between Kai and the edge

of the stage, in meters, is modeled by D(t) where t is the time in seconds. The function is

graphed below, along with one segment highlighted.

Kai is swinging on a trapeze in a circus show The horizontal distance between Kai and the edge of the stage in meters is modeled

Answer :

The sinusoidal expression of the function is D(t) = -cos(3t)

What is sinusoidal expression?

A sinusoidal alternating current can be represented by the equation i = I sin ωt, where i is the current at time t and I the maximum current. In a similar way we can write for a sinusoidal alternating voltage v = V sin ωt, where v is the voltage at time t and V the maximum voltage.

here, we have to,

to determine the sinusoidal expression:

When he pushes off, he is 1 m behind the center.

This means that:

Amplitude, a = 1.

But we use, a = -1 because he is behind

The graph has a minimum point at (0,-1) and then intersects its midline at (π/6, 0).

So, the period B is: 2π/B = 4 * π/6 and the vertical shift (d) is 0

Simplify 2π/B = 4 * π/6

2π/B = 2π/3

By comparison, we have:

B = 3

The function is given as:

a cos(Bt) + d

Substitute the calculated values

D(t) = -cos(3t)

Hence, the sinusoidal expression of the function is D(t) = -cos(3t)

Read more about sinusoidal expressions at:

brainly.com/question/16653126

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Rewritten by : Barada

Answer:

period and he completes a swing in ten seconds