# Find the Exact Value sec(225)

Find the Exact Value sec(225)
Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because secant is negative in the third quadrant.
The exact value of is .
Multiply by .
Combine and simplify the denominator.
Multiply and .
Raise to the power of .
Raise to the power of .
Use the power rule to combine exponents.
Rewrite as .
Rewrite as .
Apply the power rule and multiply exponents, .
Combine and .
Cancel the common factor of .
Cancel the common factor.
Divide by .
Evaluate the exponent.
Cancel the common factor of .
Cancel the common factor.
Divide by .
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
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### Name

Name six hundred twenty-three million three hundred eighteen thousand three hundred sixty-five

### Interesting facts

• 623318365 has 8 divisors, whose sum is 749484000
• The reverse of 623318365 is 563813326
• Previous prime number is 499

### Basic properties

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

### Name

Name one billion nine hundred seventy million four hundred eighty-nine thousand two hundred forty-six

### Interesting facts

• 1970489246 has 8 divisors, whose sum is 3224436984
• The reverse of 1970489246 is 6429840791
• Previous prime number is 11

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 50
• Digital Root 5

### Name

Name one billion five hundred sixty-nine million forty-eight thousand six hundred thirty-nine

### Interesting facts

• 1569048639 has 16 divisors, whose sum is 2147276544
• The reverse of 1569048639 is 9368409651
• Previous prime number is 523

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 51
• Digital Root 6