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Trigonometry Examples
Step 1
Combine and .
Step 2
Add to both sides of the equation.
Step 3
Multiply both sides of the equation by .
Step 4
Step 4.1
Simplify the left side.
Step 4.1.1
Cancel the common factor of .
Step 4.1.1.1
Cancel the common factor.
Step 4.1.1.2
Rewrite the expression.
Step 4.2
Simplify the right side.
Step 4.2.1
Multiply by .
Step 5
Take the inverse secant of both sides of the equation to extract from inside the secant.
Step 6
Step 6.1
The exact value of is .
Step 7
The secant function is positive in the first and fourth quadrants. To find the second solution, subtract the reference angle from to find the solution in the fourth quadrant.
Step 8
Step 8.1
To write as a fraction with a common denominator, multiply by .
Step 8.2
Combine fractions.
Step 8.2.1
Combine and .
Step 8.2.2
Combine the numerators over the common denominator.
Step 8.3
Simplify the numerator.
Step 8.3.1
Multiply by .
Step 8.3.2
Subtract from .
Step 9
Step 9.1
The period of the function can be calculated using .
Step 9.2
Replace with in the formula for period.
Step 9.3
The absolute value is the distance between a number and zero. The distance between and is .
Step 9.4
Divide by .
Step 10
The period of the function is so values will repeat every radians in both directions.
, for any integer