Question

Help plz!!

Which of the following could be the measure of the angle below?
a. -180
b. -120
c.140
d.510

Answer 1

The answer is A

Explanation:

Answer 2

Answer: The measure of the angle indicated in the figure could be - 180° (Option a.)

Solution:

1. If we measure the angle in counterclockwise the sign is positive, then the angle could be:

180°, 180°+360°=540°, 180°+2(360°)=180°+720°=900°, ...

1. If we measure the angle in clockwise the sign is negative, then the angle could be:

-180°, -180°-360°=-540°, -180°-2(360°)=-180°-720°=-900°,...

Then, of the given options, the measure of the angle indicated in the figure could be -180° (option a.)