# Find the Exact Value cos(135)

Find the Exact Value cos(135)
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 nine hundred seventy-two million three thousand seven hundred twenty-five

### Interesting facts

• 1972003725 has 32 divisors, whose sum is 2843917440
• The reverse of 1972003725 is 5273002791
• Previous prime number is 409

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 36
• Digital Root 9

### Name

Name eighty-one million eight hundred sixty-eight thousand eight hundred twenty-two

### Interesting facts

• 81868822 has 32 divisors, whose sum is 148552704
• The reverse of 81868822 is 22886818
• Previous prime number is 71

### Basic properties

• Is Prime? no
• Number parity even
• Number length 8
• Sum of Digits 43
• Digital Root 7

### Name

Name three hundred eighty-eight million six hundred seventy-three thousand nine hundred sixty-five

### Interesting facts

• 388673965 has 8 divisors, whose sum is 466518240
• The reverse of 388673965 is 569376883
• Previous prime number is 6779

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 9
• Sum of Digits 55
• Digital Root 1