Your answer is B. 1 and 3.
This is because adjacent angles are angles that could form one angle if the line inbetween them was removed, which means they have a common side. Angles 1 and 3 are the only angles out of the options that have a common side, so they must be the answer.
I hope this helps!
Answer:
Step-by-step explanation:
∫(cos(1/x)/x² dx
<u>Answer</u>
20
<u>Explanation</u>
USP is a triangle,
The angle at the center is double the angle at the circumference.
∴ <VSU at the circumference = 80/2 = 40°
< USP = 180 - 40 = 140. (angles in a straight line)
The angle SUT = 20
Angles in a triangle add up to 180.
180 - (140 + 20) = 180 - 160
= 20°
Answer:
Step-by-step explanation:
