# Find the Cosine (-2,pi/6)

Find the Cosine (-2,pi/6)
To find the between the x-axis and the line between the points and , draw the triangle between the three points , , and .
Opposite :
Adjacent :
Find the hypotenuse using Pythagorean theorem .
Raise to the power of .
Apply the product rule to .
Raise to the power of .
To write as a fraction with a common denominator, multiply by .
Combine and .
Simplify the expression.
Combine the numerators over the common denominator.
Multiply by .
Rewrite as .
Simplify the denominator.
Rewrite as .
Pull terms out from under the radical, assuming positive real numbers.
therefore .
Simplify .
Multiply the numerator by the reciprocal of the denominator.
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.
Add and .
Rewrite as .
Use to rewrite as .
Apply the power rule and multiply exponents, .
Combine and .
Cancel the common factor of .
Cancel the common factor.
Divide by .
Simplify.
Multiply .
Combine and .
Multiply by .
Move the negative in front of the fraction.
Approximate the result.
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### Name

Name four hundred eighty-three million one hundred eighty-three thousand one hundred seventy-one

### Interesting facts

• 483183171 has 16 divisors, whose sum is 513676800
• The reverse of 483183171 is 171381384
• Previous prime number is 349

### Basic properties

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

### Name

Name four hundred thirty-one million six hundred forty-one thousand seven hundred sixty-one

### Interesting facts

• 431641761 has 4 divisors, whose sum is 575522352
• The reverse of 431641761 is 167146134
• Previous prime number is 3

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 9
• Sum of Digits 33
• Digital Root 6

### Name

Name one billion nine hundred eighty-four million eight hundred twenty-five thousand one hundred seventy-one

### Interesting facts

• 1984825171 has 8 divisors, whose sum is 2269152000
• The reverse of 1984825171 is 1715284891
• Previous prime number is 2999

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 46
• Digital Root 1