I’m pretty sure the correct answer is 30
Answer:
110
Step-by-step explanation:
The answer is 110 degrees. The reason is hard to put into simple language.
If the central angle and the acute angle hitting the circumference share the same end points, then the central angle is double the arc whose vertex is on the circumference.
Read that sentence a couple of times. I don't know how to make it simpler.
The arc angle and the central angle both have B and C as their end points.
The arc angle is on the circumference of the circle. The vertex (A) of BAC is on the circumference. If mine is the only answer, wait a few days before awarding a Brainliest. A thanks will do.
<h3>
Answer:</h3>
f((x, y)) = (-y, -x)
<h3>
Step-by-step explanation:</h3>
Rotation 90° CCW about the origin is the mapping ...
... (x, y) ⇒ (-y, x)
Reflection across the x-axis is the mapping ...
... (x, y) ⇒ (x, -y)
Together, these do the following mapping:
... (x, y) ⇒ (-y, -x) . . . . . . . equivalent to a reflection across y = -x
Expressed as a function, this might be written ...
... f((x, y)) = (-y, -x) . . . . . . . the ordered pair argument becomes a new ordered pair
Answer:
arc ABC = 196°
arc DC = 360 - 196 - 70 = 94° (which looks out of proportion, but so does angle D)
Step-by-step explanation:
arc ABC = 2(∠D) = 2(98°) = 196°