Find the Exact Value cos(3/4*pi)

Find the Exact Value cos(3/4*pi)
Combine and .
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the second quadrant.
The exact value of is .
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
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Name

Name two hundred ninety-five million four hundred forty-seven thousand six hundred twenty-seven

Interesting facts

  • 295447627 has 8 divisors, whose sum is 316626336
  • The reverse of 295447627 is 726744592
  • Previous prime number is 23

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 9
  • Sum of Digits 46
  • Digital Root 1

Name

Name one billion eight hundred six million five hundred forty-three thousand eight

Interesting facts

  • 1806543008 has 64 divisors, whose sum is 13718436210
  • The reverse of 1806543008 is 8003456081
  • Previous prime number is 2

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 35
  • Digital Root 8

Name

Name twenty-seven million four hundred seven thousand five hundred fifty-six

Interesting facts

  • 27407556 has 64 divisors, whose sum is 86061888
  • The reverse of 27407556 is 65570472
  • Previous prime number is 67

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 8
  • Sum of Digits 36
  • Digital Root 9