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liberstina [14]
3 years ago
11

Find the centroid of the region bounded by the given curves y=8sin(4x), y=8cos(4x)

Mathematics
1 answer:
Luba_88 [7]3 years ago
5 0
A cosine is just a sine shifted to the left by π/2. A cosine of 4x is shifted to the left by only π/8 because of the factor 4. Sketch them.

The region we're looking for is this sausage-shaped part between the cos and the sin.

The x intercepts are at π/8 for the cosine and π/4 for the sine. The midpoint between them is at (π/8 + π/4)/2 = 3/16π.

The region is point symmetric around the x axis, so the y coordinate of the centroid is 0.

So the centroid is at (3/16π, 0)
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