Gabe S.

asked • 05/17/17

find direction angle of t

t= (-5,-5)

1 Expert Answer

By:

Kenneth S. answered • 05/18/17

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Gabe S.

Thanks for pointing out the obvious, still do not understand how to find the answer. But thanks so much for stating the facts
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05/18/17

Kenneth S.

θ = arctan(5/-5) + pi ⇐because inverse tangent of a negative value is an angle in quadrant IV; must correct it to quad II.
θ = arctan(-1) + pi
θ = -pi/4 + pi = ¾•pi; 
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05/18/17

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