Answer:
Part 1) ----->
Part 2) ---->
Part 3) ---->
Part 4) --->
Step-by-step explanation:
we know that
In the unit circle
The coordinates of a point have the following rule
where
(x,y) are the coordinates of the point a r is the radius
but remember that in a unit circle the radius is equal to 1
so
<em><u>Find the x-coordinate of each case</u></em>
Part 1) we have the point
so
The y-coordinate is
Find the value of the x-coordinate
substitute
Part 2) we have the point
so
The y-coordinate is
Find the value of the x-coordinate
substitute
Part 3) we have the point
so
The y-coordinate is
Find the value of the x-coordinate
substitute
Part 4) we have the point
so
The y-coordinate is
Find the value of the x-coordinate
substitute
Answer:
yes, parallelogram ABCD is a square.
Step-by-step explanation:
Given information: ABCD is parallelogram with vertices A(0,4), B(2, 2), C(4,4), and D(2,6).
We need to check whether this parallelogram is a square or not.
The opposite side of a parallelogram are parallel and congruent. If the interior angles a parallelogram are right angles then the parallelogram is square.
Formula for slope:
Now, find the slopes of each side.
The product of slopes of two perpendicular line is -1.
The product of slopes of any two consecutive sides is -1. It means all interior angles are right angle.
Therefore, the parallelogram ABCD is a square.
Answer:
It took her 84 minutes (or 1 hour and 24 minutes) to finish.
Answer:
-81,-294
Step-by-step explanation:
-36-27-18
=-81
-117-98-79
=-294
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