# Trigonometry

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Solve the equation for solutions in the interval [0, 360).

tan 4x = 0

Which is the correct answer?

x = 33, 57, 147, 237, 327

x = 0, 90, 180, 270

x = 0, 45, 90, 135, 180, 225, 270

x = 0, 45, 90, 135, 180, 225, 270, 315

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##### Solution Summary

This shows how to solve a tangent equation on a given interval.

##### Solution Preview

tan(4x)=0= tan(180k)

4x=180k ---> x= 45k.

Now starting from k=0, we check to see how many k's ...

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