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Ilia_Sergeevich [38]
3 years ago
7

Figure ABCD is a rectangle with point A (−2, 5). What rule would rotate the figure 90° clockwise?

Mathematics
2 answers:
babunello [35]3 years ago
4 0

Answer:

(5,2)

Step-by-step explanation:

The 90° clockwise rule (for around the origin) is: (x,y)\rightarrow(y,-x)

Apply the rule to point A:

\left \{ {(-2,5)\rightarrow(5,2)} \atop {(x,y)\rightarrow(y,-x)}} \right.

A' should be (5,2).

Natasha_Volkova [10]3 years ago
3 0

Answer:

Step-by-step explanation:

The general rule for rotation of an object 90 degrees is (x, y) to (-y, x)

so for point A(-2,5), A' will be (5,2)

to find the new

X=xcos(θ)+ysin(θ)

X=-2(cos90)+5sin90             ( cos90=0, sin 90=1)

<h2>X=5</h2>

to find the new

Y=−xsin(θ)+ycos(θ)

Y=-(-2)sin90+5cos90

<h2>Y=2</h2>

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