338,846 views
18 votes
18 votes
Is the angle
4pi/
5
acute
Or obtuse
Need Help?
acute or obtuse

User KenFar
by
2.8k points

2 Answers

27 votes
27 votes
It’s obtuse have a great day or night wish u luck
User Jerry Green
by
3.3k points
19 votes
19 votes

Answer:

Obtuse

Explanation:

4pi/5 = 144°

You could estimate 4pi/5 or do a conversion calculation.

To estimate, see unit circle attached. 4/5 is somewhere near 3/4 and 5/6 (3/4 is .75, 4/5 is .8, and 5/6 is .8333) also see on the unit circle that pi = 180° you can estimate that 4/5 of pi is going to be bigger than half of pi. 90° (half of pi) is where you go from acute to obtuse.

You can just convert radians (4pi/5 is angle measure in radians)to degrees.

Use pi = 180°

4pi/5 × 180/pi

cancel pi

= 4/5 × 180°

= 4×180 / 5

= 720/5

= 144°

A 144° angle is obtuse.

Is the angle 4pi/ 5 acute Or obtuse Need Help? acute or obtuse-example-1
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.