Answer:
46°
Step-by-step explanation:
tan Ф = 21/20
Ф = tan-1 (21/20)
= 46°
Answer:
180 degrees
Explanation:
So if it was 90 degrees it would be the same thing just fliped. 180 means that it did a half a rotaion so it would be the mirrored of the original object. That is what we see the second figure is mirrored of the other. 90 degrees also would be different.
<h2><u>
Answer: 180 degrees</u></h2>
Answer:
The center is (2, -7)
Step-by-step explanation:
A circle is given by
(x-h)^2 + (y-k)^2 = r^2
where(h,k) is the center and r is the radius
(x - 2)^2 +(y + 7)^2 =169
(x - 2)^2 +(y - -7)^2 =13^2
The center is (2, -7) and the radius is 13
Answer:
Step-by-step explanation:
Given two non zero vectors, 
.
Let the angle between the two vectors = 
Given that:
Let us have a look at the formula for magnitude of addition of two vectors:
Where is the angle between the two vectors.
formula for magnitude of subtraction of two vectors:
As per the given condition:
Squaring both sides:
So, the angle between the two vectors is:
