Answer:
B
Step-by-step explanation:
<em>Hopes This Helps :)</em>
Correct option is D) -0.6.
<u>Step-by-step explanation:</u>
We have 
. Also, we know that 
. Let's find out value of 
using above formula:
⇒
⇒ 
⇒ 
⇒ 
⇒ 
But we know that cos
is negative in third quadrant , Therefore 
.
Hence, correct option is D) -0.6.
Check the picture below.
make sure your calculator is in Degree mode.
Based on the definition of supplementary angles, the measure of both angles are: 80° and 100°.
<h3>What are Supplementary Angles?</h3>
The sum of angles that are supplementary to each other equals 180 degrees.
Let the measure of the supplementary angle be x.
The other angle will be: x + 20.
(x + 20) + x = 180
x + 20 + x = 180
2x + 20 = 180
2x = 180 - 20
2x = 160
x = 160/2
x = 80°
The other angle will be x + 20 = 80 + 20 = 100°.
The measure of the angles are: 80° and 100°.
Learn more about supplementary angles on:
brainly.com/question/8992900
#SPJ1
271 rounded is 300, and 425 rounded is 400, so you could estimate the sum by adding 300 and 400, which equals 700.
