Answer:
I would not know can you give more about the problem?
Step-by-step explanation:
Use Pythagorean theorem a^2 + b^2 = c^2
13^2 + 20^2 = c^2
169 + 400 = c^2
569 = c^2 Use square root property to get c by itself. So you find the square root of both sides
23.853 = c
<u>Answer:</u>
The correct answer option is D. (-2, 1).
<u>Step-by-step explanation:</u>
We are given the coordinates of the square A"B"C"D" after the rule is applied and we are to find the coordinates of the vertex A.
For that, we will reverse the rule.
A" = (-5, -3)
x: - 5 + 4 = -1
y: - 3 + 1 = -2
Now we will reverse the 90 degrees counter in counter clockwise rotation:
(x, y) ---> (y, -x)
(-1. -2) ---> (-2, -(-1)) = (-2, 1)
Pythagoras theorem only works for right triangle (90 degree)
Trigonometry (sin, cos, tan) works everywhere!
Hopefully I answered your question!
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:) have a great day!