Steply

Convert π/3 to degrees

Step by step, with the reason for every step · Degrees and radians · Trigonometry

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°.

π = 180°

We divide both sides by π.

One radian is 180° over π.

1 radian = 180°π

Careful!

To get degrees, π must cancel.

So π goes at the bottom.

Careful: to degrees: × 180°π

2 Multiply

π/3 radians is π/3 times one radian.

So we multiply by 180° over π.

π3 = π3 × 180°π

π on top and π at the bottom: π over π is 1.

Cross them out.

What is left: 180° over 3.

π3 = 180°3

3 Make it simpler

First 180 divided by 3: 60.

Dividing first keeps the numbers small.

180 ÷ 3 = 60

So π/3 = 60°.

π3 = 60°

4 Check

Let's check: go back to radians.

Times π over 180.

60 × π180 = 60π180 = π3

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.

Answer
π3 = 60°

Your turn

Try this one yourself, then check:

π4 to degrees
Show the answer
π4 = 45°

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