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3 years ago

How to simplify tan 11pi/2

Mathematics

1 answer:

ololo11 [35]3 years ago

5 0

Do 11 times 3.14 the divide what you get by 2

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the area of a rectangle is 5 4/5 square meters. the width of a rectangle is 2 1/4 meter. which is the best estimate for the leng

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2 26/45 is the area to the rectangle.

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lorasvet [3.4K]

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Step-by-step explanation:

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3 years ago

What is the answer for it ?

ivann1987 [24]

Answer:

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3 years ago

Help !! Please I can’t find the answer

SVETLANKA909090 [29]

Answer:

$\large\boxed{r^2=(x+5)^2+(y-4)^2}$

Step-by-step explanation:

The equation of a circle:

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

(h, k) - center

r - radius

We have diameter endpoints.

Half the length of the diameter is the length of the radius.

The center of the diameter is the center of the circle.

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Substitute the coordinates of the given points (-8, 2) and (-2, 6):

$d=\sqrt{(6-2)^2+(-2-(-8))^2}=\sqrt{4^2+6^2}=\sqrt{16+36}=\sqrt{52}$

The radius:

$r=\dfrac{d}{2}\to r=\dfrac{\sqrt{52}}{2}$

The formula of a midpoint:

$\left(\dfrac{x_1+x_2}{2},\ \dfrac{y_1+y_2}{2}\right)$

Substitute:

$x=\dfrac{-8+(-2)}{2}=\dfrac{-10}{2}=-5\\\\y=\dfrac{2+6}{2}=\dfrac{8}{2}=4$

$(-5,\ 4)\to h=-5,\ k=4$

Finally:

$(x-(-5))^2+(y-4)^2=\left(\dfrac{\sqrt{52}}{2}\right)^2\\\\(x+5)^2+(y-4)^2=\dfrac{52}{4}\\\\(x+5)^2+(y-4)^2=13$

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3 years ago

I neeeeeed help please!!!!!!!!!!!

Helga [31]

Answer:

Step-by-step explanation:

Its pretty easy math

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3 years ago