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sqdancefan
In the given quadrant, sine and cosine are negative and tangent is positive.

cos(θ) = -√(1 - (-5/8)²) = (-√39)/8

tan(θ) = sin(θ)/cos(θ) = 5/√39 = (5√39)/39

csc(θ) = 1/sin(θ) = -8/5

sec(θ) = 1/cos(θ) = -8/√39 = (-8√39)/39

cot(θ) = 1/tan(θ) = (√39)/5

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