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2 years ago

Plz help me with this

Mathematics

1 answer:

zvonat [6]2 years ago

8 0

Answer: 5 cos x

Step-by-step explanation:

y = sin x is y = cos x shifted to the right π/2 units.

y = 5 sin (x + π/2) is a shift to the left π/2 units (which results in cos x) and . an amplitude of 5.

--> y = 5 cos x

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3 years ago

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aliina [53]

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$(x-1)^2+(y-2)^2=6.25$

Step-by-step explanation:

The equation for a circle is given by:

$(x-h)^2+(y-k)^2=r^2$

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The center is the red dot, which is (1,2). Thus, h=1 and k=2.

To find the radius, you need to use the distance formula. We are given two coordinates: the center (red dot) at (1,2) and a blue dot on the circle at (2.5,4). Find the radius by using the distance formula:

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Thus, r is 2.5.

Plugging these numbers into the equation, we have:

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2 years ago