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OpenStudy (anonymous):
If cosx=2/3 and x is in quadrant 4: Find sinx,tanx, and sec x
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OpenStudy (anonymous):
cos x=base/hypotenuse compare with given info.. base=2 hypotenuse=3 also cosx=+ve in 4th quadrant now solve for sinx tanx and sec x.. find perependicular using pythogoras then sinx=perp/hyp tanx=p/b sec x=1/cosx
OpenStudy (anonymous):
Also ,sin x , tan x are -ve in 4th quadrant
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