Step by step
The question
Question: change π/3 to degrees.
1 Write the rule
Radians are another way to measure an angle.
A half turn is 180°.
In radians, a half turn is π.
So π = 180°.
We divide both sides by π.
One radian is 180° over π.
Careful!
To get degrees, π must cancel.
So π goes at the bottom.
2 Multiply
π/3 radians is π/3 times one radian.
So we multiply by 180° over π.
π on top and π at the bottom: π over π is 1.
Cross them out.
What is left: 180° over 3.
3 Make it simpler
First 180 divided by 3: 60.
Dividing first keeps the numbers small.
So π/3 = 60°.
4 Check
Let's check: go back to radians.
Times π over 180.
We get π/3 again.
So it is right!
Let's look back.
First: write the rule.
Then: multiply.
Then: make it simpler.
Last: check.