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 .
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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 .
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Simplify each term.
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Multiply .
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Multiply and .
Combine using the product rule for radicals.
Multiply by .
Multiply by .
Multiply .
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Multiply and .
Multiply by .
Combine the numerators over the common denominator.
Simplify terms.
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Cancel the common factor of .
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Factor out of .
Cancel the common factor.
Rewrite the expression.
Apply the distributive property.
Combine and .
Combine and .
Simplify each term.
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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