# Convert from Radians to Degrees cos(pi/12)

Convert from Radians to Degrees cos(pi/12)
To convert radians to degrees, multiply by , since a full circle is or radians.
The exact value of is .
Split into two angles where the values of the six trigonometric functions are known.
Apply the difference of angles identity .
The exact value of is .
The exact value of is .
The exact value of is .
The exact value of is .
Simplify .
Simplify each term.
Multiply .
Multiply and .
Combine using the product rule for radicals.
Multiply by .
Multiply by .
Multiply .
Multiply and .
Multiply by .
Combine the numerators over the common denominator.
Simplify terms.
Cancel the common factor of .
Factor out of .
Cancel the common factor.
Rewrite the expression.
Apply the distributive property.
Combine and .
Combine and .
Simplify each term.
Move to the left of .
Move to the left of .
is approximately equal to .
Convert to a decimal.
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### Name

Name six hundred seventy-nine million nine hundred six thousand four hundred ninety-four

### Interesting facts

• 679906494 has 32 divisors, whose sum is 1518596640
• The reverse of 679906494 is 494609976
• Previous prime number is 197

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 54
• Digital Root 9

### Name

Name three hundred eighty-seven million two hundred fifty-nine thousand seven hundred ninety-seven

### Interesting facts

• 387259797 has 16 divisors, whose sum is 531625472
• The reverse of 387259797 is 797952783
• Previous prime number is 421

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 9
• Sum of Digits 57
• Digital Root 3

### Name

Name one billion eight hundred fifty-one million seven hundred sixty-six thousand three hundred eighty-nine

### Interesting facts

• 1851766389 has 16 divisors, whose sum is 3297112000
• The reverse of 1851766389 is 9836671581
• Previous prime number is 3

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 54
• Digital Root 9