kayleebeaton kayleebeaton

20-02-2017
Mathematics

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Find cos θ if sin θ = -12/13 and tan θ > 0

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ChandrikaP ChandrikaP

20-02-2017

sinФ=-12/13
cosФ=Base/hypotenus
(hy)^2-(perpendicular)^2=(base)^2=13^2-12^2=5
cosФ=-5/13

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