You can put this solution on YOUR website! Solve the following equations in the interval [0,2π].
tan(t)=1
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Tangent is positive in Q1 and Q3
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If tan(t)=-1
Tangent is negative in Q2 & Q4.
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If you don't know where tan = 1 or -1, you can use a calculator.
You need to know that, tho.