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

Verify the Identity (sin(x)^2-cos(x)^2)/(sin(x)-cos(x))=sin(x)+cos(x)
Start on the left side.
Simplify.
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Cancel the common factor of .
Because the two sides have been shown to be equivalent, the equation is an identity.
is an identity
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### Name

Name one billion six hundred twenty-four million nine hundred ninety-nine thousand

### Interesting facts

• 1624999000 has 128 divisors, whose sum is 6859831680
• The reverse of 1624999000 is 0009994261
• Previous prime number is 521

### Basic properties

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

### Name

Name six hundred sixty-eight million five hundred thirty-three thousand five hundred forty-five

### Interesting facts

• 668533545 has 4 divisors, whose sum is 683389892
• The reverse of 668533545 is 545335866
• Previous prime number is 45

### Basic properties

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

### Name

Name two billion ninety-three million six hundred twenty-three thousand seven hundred sixty-six

### Interesting facts

• 2093623766 has 8 divisors, whose sum is 3382007664
• The reverse of 2093623766 is 6673263902
• Previous prime number is 13

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 44
• Digital Root 8