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 one hundred eighty-one million nine hundred twenty-four thousand six hundred thirty-five

Interesting facts

  • 1181924635 has 4 divisors, whose sum is 1418309568
  • The reverse of 1181924635 is 5364291811
  • Previous prime number is 5

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 40
  • Digital Root 4

Name

Name two billion seventy-six million seven hundred fifty-seven thousand two hundred forty-five

Interesting facts

  • 2076757245 has 16 divisors, whose sum is 2591789760
  • The reverse of 2076757245 is 5427576702
  • Previous prime number is 353

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 45
  • Digital Root 9

Name

Name six hundred sixty-three million four hundred sixty-five thousand four hundred twenty-one

Interesting facts

  • 663465421 has 4 divisors, whose sum is 664371292
  • The reverse of 663465421 is 124564366
  • Previous prime number is 733

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 9
  • Sum of Digits 37
  • Digital Root 1