# 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 one billion four hundred eighty-nine million eight hundred twenty thousand twenty-nine

### Interesting facts

• 1489820029 has 8 divisors, whose sum is 1494899712
• The reverse of 1489820029 is 9200289841
• Previous prime number is 1613

### Basic properties

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

### Name

Name one hundred fifty million ninety-two thousand six hundred thirteen

### Interesting facts

• 150092613 has 8 divisors, whose sum is 206187968
• The reverse of 150092613 is 316290051
• Previous prime number is 33

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 9
• Sum of Digits 27
• Digital Root 9

### Name

Name seven hundred ninety-nine million eight hundred ninety-eight thousand six hundred seventeen

### Interesting facts

• 799898617 has 4 divisors, whose sum is 914169856
• The reverse of 799898617 is 716898997
• Previous prime number is 7

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 9
• Sum of Digits 64
• Digital Root 1