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5) Find the value of sin θ given cos θ = 0.8 and tan θ < 0.

 Feb 2, 2020
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Cos =.8        Tan = sin/cos       since  tan < 0     sin is <0

 

s^2 + c^2 = 1

s^2 = 1-.64

s^2 = .36

s = +-.6         but must be neagtive   so    sin = -0.6

 Feb 2, 2020

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