# Verify the Identity sin(a)=tan(a)*cos(a)

Verify the Identity sin(a)=tan(a)*cos(a)
Start on the right side.
Write in sines and cosines using the quotient identity.
Cancel the common factor of .
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 eighty-three million two hundred eighty thousand three hundred seventy-four

### Interesting facts

• 1483280374 has 16 divisors, whose sum is 2308369536
• The reverse of 1483280374 is 4730823841
• Previous prime number is 197

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 40
• Digital Root 4

### Name

Name four hundred thirty-nine million one hundred forty-eight thousand nine hundred sixty

### Interesting facts

• 439148960 has 256 divisors, whose sum is 4007126376
• The reverse of 439148960 is 069841934
• Previous prime number is 1033

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 44
• Digital Root 8

### Name

Name three hundred seventeen million nine hundred fifty-nine thousand three hundred eighty-seven

### Interesting facts

• 317959387 has 4 divisors, whose sum is 325714536
• The reverse of 317959387 is 783959713
• Previous prime number is 41

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 9
• Sum of Digits 52
• Digital Root 7