# Expand Using Sum/Difference Formulas csc(pi/2-theta)

Expand Using Sum/Difference Formulas csc(pi/2-theta)
Replace with an equivalent expression using the fundamental identities.
Use a sum or difference formula on the denominator.
Use the difference formula for sine to simplify the expression. The formula states that .
Remove parentheses.
Simplify each term.
The exact value of is .
Multiply by .
The exact value of is .
Multiply by .
Multiply by .
Convert from to .
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### Name

Name one billion three hundred fifty-nine million nine hundred fifty-three thousand four hundred twenty-four

### Interesting facts

• 1359953424 has 256 divisors, whose sum is 8476488000
• The reverse of 1359953424 is 4243599531
• Previous prime number is 19

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 45
• Digital Root 9

### Name

Name one billion two hundred seventy-nine million three hundred forty-three thousand one hundred twenty-one

### Interesting facts

• 1279343121 has 16 divisors, whose sum is 1362586368
• The reverse of 1279343121 is 1213439721
• Previous prime number is 103

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 33
• Digital Root 6

### Name

Name one billion eight hundred twelve million nine hundred eighty-six thousand four hundred eight

### Interesting facts

• 1812986408 has 64 divisors, whose sum is 6424142400
• The reverse of 1812986408 is 8046892181
• Previous prime number is 163

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 47
• Digital Root 2