Question
Asked Jan 30, 2020
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Find a formula for the trigonometric function graphed below. Use x as the independent variable in your formula.
help (formulas)
.4
0.2
pi/18
pi/9
-8.2
-8,4
(Click on araph to enlarge).
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Find a formula for the trigonometric function graphed below. Use x as the independent variable in your formula. help (formulas) .4 0.2 pi/18 pi/9 -8.2 -8,4 (Click on araph to enlarge).

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Expert Answer

Step 1

First find the parent function for the given curve, here the curve attains its maximum value at x = 0 and maximum value is 0.4, so parent function for this function is cosine function.

 

 Let, the given function is of the form f(x) = A cos (B x) + C.

 

The Midline of the curve is y = 0, which is located in the middle of graphs maximum and minimum points, so the value of C = 0.

Step 2

The vertical distance between the midline and the maximum value attains at x = 0.4, So the value of amplitude A = 0.4.

 ...

Trigonometry homework question answer, step 2, image 1
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