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Trigonometry Examples
Step 1
Step 1.1
Rewrite in terms of sines and cosines, then cancel the common factors.
Step 1.1.1
Add parentheses.
Step 1.1.2
Rewrite in terms of sines and cosines.
Step 1.1.3
Cancel the common factors.
Step 2
Divide each term in the equation by .
Step 3
Step 3.1
Cancel the common factor.
Step 3.2
Rewrite the expression.
Step 4
Separate fractions.
Step 5
Convert from to .
Step 6
Divide by .
Step 7
Separate fractions.
Step 8
Convert from to .
Step 9
Divide by .
Step 10
Multiply by .
Step 11
Subtract from both sides of the equation.
Step 12
Step 12.1
Divide each term in by .
Step 12.2
Simplify the left side.
Step 12.2.1
Dividing two negative values results in a positive value.
Step 12.2.2
Divide by .
Step 12.3
Simplify the right side.
Step 12.3.1
Divide by .
Step 13
Take the inverse tangent of both sides of the equation to extract from inside the tangent.
Step 14
Step 14.1
The exact value of is .
Step 15
The tangent function is positive in the first and third quadrants. To find the second solution, add the reference angle from to find the solution in the fourth quadrant.
Step 16
Step 16.1
To write as a fraction with a common denominator, multiply by .
Step 16.2
Combine fractions.
Step 16.2.1
Combine and .
Step 16.2.2
Combine the numerators over the common denominator.
Step 16.3
Simplify the numerator.
Step 16.3.1
Move to the left of .
Step 16.3.2
Add and .
Step 17
Step 17.1
The period of the function can be calculated using .
Step 17.2
Replace with in the formula for period.
Step 17.3
The absolute value is the distance between a number and zero. The distance between and is .
Step 17.4
Divide by .
Step 18
The period of the function is so values will repeat every radians in both directions.
, for any integer
Step 19
Consolidate the answers.
, for any integer