# Verify the Identity (csc(x))/(sec(x))+(cos(x))/(sin(x))=2cot(x)

Verify the Identity (csc(x))/(sec(x))+(cos(x))/(sin(x))=2cot(x)
Start on the left side.
Convert to sines and cosines.
Apply the reciprocal identity to .
Apply the reciprocal identity to .
Simplify.
Simplify each term.
Multiply the numerator by the reciprocal of the denominator.
Combine and .
Combine the numerators over the common denominator.
Now consider the right side of the equation.
Write in sines and cosines using the quotient identity.
Combine and .
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 four hundred forty-four million nine hundred seventy-two thousand six hundred forty-two

### Interesting facts

• 1444972642 has 8 divisors, whose sum is 2171604816
• The reverse of 1444972642 is 2462794441
• Previous prime number is 523

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 43
• Digital Root 7

### Name

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

### Interesting facts

• 66554621 has 4 divisors, whose sum is 76062432
• The reverse of 66554621 is 12645566
• Previous prime number is 7

### Basic properties

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

### Name

Name one billion five hundred sixty-three million five hundred four thousand fifty-one

### Interesting facts

• 1563504051 has 4 divisors, whose sum is 1586163600
• The reverse of 1563504051 is 1504053651
• Previous prime number is 69

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 30
• Digital Root 3