Trigonometry Examples

Solve for θ in Degrees 3tan(theta)+1=0
Step 1
Subtract from both sides of the equation.
Step 2
Divide each term in by and simplify.
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Step 2.1
Divide each term in by .
Step 2.2
Simplify the left side.
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Step 2.2.1
Cancel the common factor of .
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Step 2.2.1.1
Cancel the common factor.
Step 2.2.1.2
Divide by .
Step 2.3
Simplify the right side.
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Step 2.3.1
Move the negative in front of the fraction.
Step 3
Take the inverse tangent of both sides of the equation to extract from inside the tangent.
Step 4
Simplify the right side.
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Step 4.1
Evaluate .
Step 5
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 6
Simplify the expression to find the second solution.
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Step 6.1
Add to .
Step 6.2
The resulting angle of is positive and coterminal with .
Step 7
Find the period of .
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Step 7.1
The period of the function can be calculated using .
Step 7.2
Replace with in the formula for period.
Step 7.3
The absolute value is the distance between a number and zero. The distance between and is .
Step 7.4
Divide by .
Step 8
Add to every negative angle to get positive angles.
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Step 8.1
Add to to find the positive angle.
Step 8.2
Subtract from .
Step 8.3
List the new angles.
Step 9
The period of the function is so values will repeat every degrees in both directions.
, for any integer
Step 10
Consolidate the answers.
, for any integer