Verify the Identity (sin(x)^2)/(cos(x))+cos(x)-1/(cos(x))+1=sec(x)^2cos(x)^2

Verify the Identity (sin(x)^2)/(cos(x))+cos(x)-1/(cos(x))+1=sec(x)^2cos(x)^2
Start on the left side.
Apply Pythagorean identity in reverse.
Simplify.
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Combine the numerators over the common denominator.
Subtract from .
Add and .
Cancel the common factor of and .
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Factor out of .
Cancel the common factors.
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Multiply by .
Cancel the common factor.
Rewrite the expression.
Divide by .
Subtract from .
Add and .
Rewrite as .
Because the two sides have been shown to be equivalent, the equation is an identity.
is an identity
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Name

Name nine hundred fifty-eight million eight hundred sixty thousand five hundred forty-nine

Interesting facts

  • 958860549 has 16 divisors, whose sum is 1704978432
  • The reverse of 958860549 is 945068859
  • Previous prime number is 8387

Basic properties

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

Name

Name one billion eight hundred fifteen million eight hundred seventy-one thousand three hundred twenty-two

Interesting facts

  • 1815871322 has 8 divisors, whose sum is 2728595700
  • The reverse of 1815871322 is 2231785181
  • Previous prime number is 569

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 38
  • Digital Root 2

Name

Name one billion six hundred seventy-one million five hundred thirty-six thousand seven hundred one

Interesting facts

  • 1671536701 has 8 divisors, whose sum is 1699989408
  • The reverse of 1671536701 is 1076351761
  • Previous prime number is 1811

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 37
  • Digital Root 1