Question 747252: 6 trig values of cos(θ) = 5/13 and 3π/2 < θ < 2π
Answer by timvanswearingen(106)   (Show Source):
You can put this solution on YOUR website! Setting up a right triangle in quadrant IV, adjacent is 5, opposite is 12, and hypotenuse is 13. In quadrant IV, cosine and secant are positive and the sine and tangent functions are negative.
Cos (θ) = 5/13
Sec (θ) = 13/5
The last 4 trig functions will be negative.
Sin (θ) = o/h = -12/13
Csc (θ) = -13/12
Tan (θ) = o/a = -12/5
Cot (θ) = -5/12
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