Applying the angles of intersecting secants theorem, the measure of angle ACB is: 16°.
<h3>What is the Angles of Intersecting Secants Theorem?</h3>
The angles of intersecting secants theorem states that the angle formed by two lines (secants or a tangent and a secant) that intersect outside a circle equals half the difference of the measure of the intercepted arcs.
Find m(XA) based on the inscribed angle theorem:
m(XA) = 2(m∠CBA)
Substitute
m(XA) = 2(42)
m(XA) = 84°
Based on the angles of intersecting secants theorem, we would have:
m∠ACB = 1/2[m(AB) - m(XA)]
Substitute
m∠ACB = 1/2[100 - 84]
m∠ACB = 16°
Therefore, applying the angles of intersecting secants theorem, the measure of angle ACB is: 16°.
Learn more about the angles of intersecting secants theorem on:
brainly.com/question/1626547
<h3>
Answer: (12,3)</h3>
======================================================
Explanation:
R is located at (3,4). Move it 3 units to the left and 4 units down to have it move to (0,0). Call this point A. Apply the same translation rule to point B so that (2,-5) moves to (-1,-9). Let's call this point C
Now you'll use the rule
which rotates any point around the origin 90 degrees counterclockwise. So we're rotating C around A.
Point C has the coordinates (-1,-9). When you use the rotation rule
we get
. We'll call this point D
Finally, undo the translation rule done at the start of the problem. So we'll go 3 units to the right and 4 units up to have point D move to point E = (12,3) which is exactly where point B' is located.
Check out the diagram below.
Answer:
measure of angle 1=180-123=57°[exterior angle is supplementary]
Answer:
(-5,-28)
Step-by-step explanation:
Given

Required
Find the coordinates of the vertex
Given that the function is a quadratic function;
The general form of a quadratic function is

By comparison;

To calculate the coordinates of the vertex;
we start by calculating the x-coordinate;

Substitute 10 for b and 1 for a



Substitute
in the given function;




<em>Hence, the coordinates of the vertex is (-5,-28)</em>