# Find the Exact Value cos(120)

Find the Exact Value cos(120)
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the second quadrant.
The exact value of is .
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
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### Name

Name one billion four hundred seventy-four million seven hundred ten thousand two hundred eighty

### Interesting facts

• 1474710280 has 64 divisors, whose sum is 5983129152
• The reverse of 1474710280 is 0820174741
• Previous prime number is 571

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 34
• Digital Root 7

### Name

Name five hundred forty-nine million ten thousand two hundred eighty-eight

### Interesting facts

• 549010288 has 64 divisors, whose sum is 2781711720
• The reverse of 549010288 is 882010945
• Previous prime number is 1237

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 37
• Digital Root 1

### Name

Name one billion nine hundred eighty-nine million two hundred seventy-one thousand eight hundred ninety-eight

### Interesting facts

• 1989271898 has 32 divisors, whose sum is 3233260800
• The reverse of 1989271898 is 8981729891
• Previous prime number is 47

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 62
• Digital Root 8