Solve for ? cos(theta)+1=0

Solve for ? cos(theta)+1=0
Subtract from both sides of the equation.
Take the inverse cosine of both sides of the equation to extract from inside the cosine.
The exact value of is .
The cosine function is negative in the second and third quadrants. To find the second solution, subtract the reference angle from to find the solution in the third quadrant.
Subtract from .
Find the period.
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The period of the function can be calculated using .
Replace with in the formula for period.
Solve the equation.
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The absolute value is the distance between a number and zero. The distance between and is .
Divide by .
The period of the function is so values will repeat every radians in both directions.
, for any integer
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Name

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

Interesting facts

  • 1667090889 has 16 divisors, whose sum is 2306241280
  • The reverse of 1667090889 is 9880907661
  • Previous prime number is 2851

Basic properties

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

Name

Name one billion six hundred seventy-one million four hundred eighty-five thousand nine hundred thirty-four

Interesting facts

  • 1671485934 has 64 divisors, whose sum is 3671438400
  • The reverse of 1671485934 is 4395841761
  • Previous prime number is 709

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 48
  • Digital Root 3

Name

Name one billion two hundred forty-eight million two hundred twenty-six thousand one hundred eighty-eight

Interesting facts

  • 1248226188 has 128 divisors, whose sum is 4269957120
  • The reverse of 1248226188 is 8816228421
  • Previous prime number is 47

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 42
  • Digital Root 6