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Trigonometry Examples
Step 1
Step 1.1
Divide each term in by .
Step 1.2
Simplify the left side.
Step 1.2.1
Cancel the common factor of .
Step 1.2.1.1
Cancel the common factor.
Step 1.2.1.2
Rewrite the expression.
Step 1.3
Simplify the right side.
Step 1.3.1
Rewrite in terms of sines and cosines.
Step 1.3.2
Rewrite as a product.
Step 1.3.3
Multiply by .
Step 1.3.4
Simplify the denominator.
Step 1.3.4.1
Raise to the power of .
Step 1.3.4.2
Raise to the power of .
Step 1.3.4.3
Use the power rule to combine exponents.
Step 1.3.4.4
Add and .
Step 1.3.5
Simplify with factoring out.
Step 1.3.5.1
Rewrite as .
Step 1.3.5.2
Rewrite as .
Step 1.3.6
Convert from to .
Step 2
Rewrite the equation as .
Step 3
Take the specified root of both sides of the equation to eliminate the exponent on the left side.
Step 4
Any root of is .
Step 5
Step 5.1
First, use the positive value of the to find the first solution.
Step 5.2
Next, use the negative value of the to find the second solution.
Step 5.3
The complete solution is the result of both the positive and negative portions of the solution.
Step 6
Set up each of the solutions to solve for .
Step 7
Step 7.1
Take the inverse secant of both sides of the equation to extract from inside the secant.
Step 7.2
Simplify the right side.
Step 7.2.1
The exact value of is .
Step 7.3
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 7.4
Subtract from .
Step 7.5
Find the period of .
Step 7.5.1
The period of the function can be calculated using .
Step 7.5.2
Replace with in the formula for period.
Step 7.5.3
The absolute value is the distance between a number and zero. The distance between and is .
Step 7.5.4
Divide by .
Step 7.6
The period of the function is so values will repeat every radians in both directions.
, for any integer
, for any integer
Step 8
Step 8.1
Take the inverse secant of both sides of the equation to extract from inside the secant.
Step 8.2
Simplify the right side.
Step 8.2.1
The exact value of is .
Step 8.3
The secant function is negative in the second and third quadrants. To find the second solution, subtract the reference angle from to find the solution in the third quadrant.
Step 8.4
Subtract from .
Step 8.5
Find the period of .
Step 8.5.1
The period of the function can be calculated using .
Step 8.5.2
Replace with in the formula for period.
Step 8.5.3
The absolute value is the distance between a number and zero. The distance between and is .
Step 8.5.4
Divide by .
Step 8.6
The period of the function is so values will repeat every radians in both directions.
, for any integer
, for any integer
Step 9
List all of the solutions.
, for any integer
Step 10
Consolidate the answers.
, for any integer