Expand Using Sum/Difference Formulas sin(15 degrees )

Expand Using Sum/Difference Formulas sin(15 degrees )
First, split the angle into two angles where the values of the six trigonometric functions are known. In this case, can be split into .
Use the difference formula for sine to simplify the expression. The formula states that .
The exact value of is .
The exact value of is .
The exact value of is .
The exact value of is .
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.
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
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Name

Name one billion nine hundred sixty-five million seven hundred thirty-eight thousand nine hundred five

Interesting facts

  • 1965738905 has 16 divisors, whose sum is 2542050000
  • The reverse of 1965738905 is 5098375691
  • Previous prime number is 18749

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 53
  • Digital Root 8

Name

Name five hundred twenty-five million eleven thousand nine hundred forty-five

Interesting facts

  • 525011945 has 8 divisors, whose sum is 630139200
  • The reverse of 525011945 is 549110525
  • Previous prime number is 8599

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 9
  • Sum of Digits 32
  • Digital Root 5

Name

Name one billion three hundred ninety-three million five hundred forty-six thousand four hundred ninety-six

Interesting facts

  • 1393546496 has 512 divisors, whose sum is 35715079062
  • The reverse of 1393546496 is 6946453931
  • Previous prime number is 2

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 50
  • Digital Root 5