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Mathematics 7 Online
OpenStudy (anonymous):

Find the value of tan θ for the angle shown.

OpenStudy (anonymous):

OpenStudy (anonymous):

wheres the angle?

OpenStudy (anonymous):

^right there

OpenStudy (jdoe0001):

notice the coordinates for the point, \(\large \begin{array}{llll} &x&y\\ &cosine&sine\\ (&\sqrt{33}\quad ,\quad &-4)\\ \quad \\ &&tan(\theta)=\cfrac{sin(\theta)}{cos(\theta)}\implies \cfrac{y}{x} \end{array}\)

OpenStudy (anonymous):

- sqrt(33)/4 Becuase that is a 4th quadrant angle where the tangent of that angle is negative. And tangent of theta is just y/x by definition.

OpenStudy (anonymous):

sorry...-4/sqrt(33)

OpenStudy (anonymous):

-4/√33

OpenStudy (anonymous):

theres not option for that

OpenStudy (anonymous):

tan θ = negative square root of thirty-three divided by four tan θ = negative four times square root of thirty-three divided by thirty-three tan θ = negative four-sevenths tan θ = negative square root of thirty-three divided by seven

OpenStudy (jdoe0001):

because you'd have to simplify it

OpenStudy (jdoe0001):

so simplify it by getting rid of the radical in the denominator

OpenStudy (anonymous):

what is it ?

OpenStudy (jdoe0001):

multiply top and bottom by the denominator

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