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4 years ago

7

What is the image of point R after a counterclockwise rotation on 270 degrees about the orgin?

1 answer:

alexandr1967 [171]4 years ago

4 0

I will use ccw for countercloclwise and cw for clockwise for this explination.

A 270 ccw rotation is the EXACT same as a 90 cw rotation. So to perform a 90 degree cw rotation all that has to be done is swap the x anf y coordinates and change the sign on the y. As a general form:
(x, y) becomes (y, -x)

In your problem R is at (3, 6) so swap the 3 and 6 to get (6, 3) now change the sign on the 3 to get R' as (6, -3)

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Answer:

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Step-by-step explanation:

From given picture we see that

BC=8 in

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AD=AB

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$(hypotenuse)^2=(base)^2+(perpendicular)^2$

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take square root

$6=AC$

Then area of triangle ABC $=\frac{1}{2}\left(base\right)\left(altitude\right)$

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Step-by-step explanation:

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