# Expand tan(2x)

Expand tan(2x)
Apply the tangent double-angle identity.
Simplify the denominator.
Rewrite as .
Since both terms are perfect squares, factor using the difference of squares formula, where and .
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### Name

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

### Interesting facts

• 536865508 has 16 divisors, whose sum is 1279003284
• The reverse of 536865508 is 805568635
• Previous prime number is 17

### Basic properties

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

### Name

Name six hundred eleven million four hundred thirty-four thousand three hundred eighty-eight

### Interesting facts

• 611434388 has 16 divisors, whose sum is 1386561024
• The reverse of 611434388 is 883434116
• Previous prime number is 127

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 38
• Digital Root 2

### Name

Name one billion six hundred seventy-six million six hundred sixty-three thousand six hundred forty-six

### Interesting facts

• 1676663646 has 32 divisors, whose sum is 3834325248
• The reverse of 1676663646 is 6463666761
• Previous prime number is 2203

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 51
• Digital Root 6