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Trigonometry Examples
Step 1
Divide each term in the equation by .
Step 2
Convert from to .
Step 3
Step 3.1
Cancel the common factor.
Step 3.2
Divide by .
Step 4
Separate fractions.
Step 5
Convert from to .
Step 6
Divide by .
Step 7
Multiply by .
Step 8
Subtract from both sides of the inequality.
Step 9
Take the inverse tangent of both sides of the equation to extract from inside the tangent.
Step 10
Step 10.1
The exact value of is .
Step 11
The tangent function is negative in the second and fourth quadrants. To find the second solution, subtract the reference angle from to find the solution in the third quadrant.
Step 12
Step 12.1
Add to .
Step 12.2
The resulting angle of is positive and coterminal with .
Step 13
Step 13.1
The period of the function can be calculated using .
Step 13.2
Replace with in the formula for period.
Step 13.3
The absolute value is the distance between a number and zero. The distance between and is .
Step 13.4
Divide by .
Step 14
Step 14.1
Add to to find the positive angle.
Step 14.2
To write as a fraction with a common denominator, multiply by .
Step 14.3
Combine fractions.
Step 14.3.1
Combine and .
Step 14.3.2
Combine the numerators over the common denominator.
Step 14.4
Simplify the numerator.
Step 14.4.1
Move to the left of .
Step 14.4.2
Subtract from .
Step 14.5
List the new angles.
Step 15
The period of the function is so values will repeat every radians in both directions.
, for any integer
Step 16
Consolidate the answers.
, for any integer
Step 17
Use each root to create test intervals.
Step 18
Compare the intervals to determine which ones satisfy the original inequality.
Step 19
Since there are no numbers that fall within the interval, this inequality has no solution.
No solution