# Expand Using Sum/Difference Formulas cos(45)

Expand Using Sum/Difference Formulas cos(45)
The angle is an angle where the values of the six trigonometric functions are known. Because this is the case, add to keep the value the same.
Use the sum formula for cosine to simplify the expression. The formula states that .
The exact value of is .
The exact value of is .
The exact value of is .
The exact value of is .
Simplify each term.
Multiply by .
Multiply by .
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
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### Name

Name eighty-one million six hundred twenty-four thousand four hundred ninety-five

### Interesting facts

• 81624495 has 8 divisors, whose sum is 130599216
• The reverse of 81624495 is 59442618
• Previous prime number is 5

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 8
• Sum of Digits 39
• Digital Root 3

### Name

Name one billion six hundred fifty-three million three hundred sixty-two thousand two hundred thirty

### Interesting facts

• 1653362230 has 16 divisors, whose sum is 3204979344
• The reverse of 1653362230 is 0322633561
• Previous prime number is 13

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 31
• Digital Root 4

### Name

Name four hundred forty-eight million eight hundred forty-eight thousand eight hundred twenty-two

### Interesting facts

• 448848822 has 32 divisors, whose sum is 912100320
• The reverse of 448848822 is 228848844
• Previous prime number is 569

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 48
• Digital Root 3