# Expand the Trigonometric Expression (cos(5t)+cos(3t))/(sin(5t)+sin(3t))

Expand the Trigonometric Expression (cos(5t)+cos(3t))/(sin(5t)+sin(3t))
Use the triple-angle identity to transform to .
Apply the sine triple-angle identity.
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### Name

Name two billion forty-five million four hundred twenty-five thousand two hundred eight

### Interesting facts

• 2045425208 has 16 divisors, whose sum is 6903310104
• The reverse of 2045425208 is 8025245402
• Previous prime number is 2

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 32
• Digital Root 5

### Name

Name one hundred thirty-five million ninety thousand seven hundred thirty-seven

### Interesting facts

• 135090737 has 16 divisors, whose sum is 143016192
• The reverse of 135090737 is 737090531
• Previous prime number is 131

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 9
• Sum of Digits 35
• Digital Root 8

### Name

Name two hundred ninety-nine million nine hundred sixty-six thousand three hundred ten

### Interesting facts

• 299966310 has 16 divisors, whose sum is 548510976
• The reverse of 299966310 is 013669992
• Previous prime number is 63

### Basic properties

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