# Solve for x sec(four x) equals two

Solve for x sec(4x)=2
Take the inverse secant of both sides of the equation to extract from inside the secant.
The exact value of is .
First, divide each term by and simplify.
Divide each term in by .
The common factor should be canceled of .
Cancel the common factor.
Divide by .
First, multiply .
Multiply and .
Multiply by .
The secant function is positive in the Initially and fourth quadrants. To calculate the second answer, subtract the reference angle from to find the solution in the fourth quadrant.
Clarify the expression To calculate the second answer.
To write as a fraction with a common denominator, multiply by .
Write each expression with a common denominator of , by multiplying each by an appropriate factor of .
Multiply by .
Add numerators over the common denominator.
Multiply by .
Subtract from .
Divide each term by and simplify.
Divide each term in by .
The common factor should be canceled.
Cancel the common factor.
Divide by .
Multiply .
Multiply and .
Multiply by .
Calculate the period.
Evaluate the period of function using .
Replace with in the formula for period.
Find solution to the equation.
The absolute value is the distance between a number and zero. The distance between and is .
The common factor should be canceled and .
Factor out of .
The common factors should be canceled.
Factor out of .
Cancel the common factor.
Reformulate the expression.
The period of the function is so values will repeat every radians in two directions at once.
, for any integer
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