SOLUTION: Determine sin θ to 3 decimal places if cos θ = 1/2 and θ is an angle in quadrant IV.

SOLUTION: Determine sin θ to 3 decimal places if cos θ = 1/2 and θ is an angle in quadrant IV.

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Question 1173824: Determine sin θ to 3 decimal places if cos θ = 1/2 and θ is an angle in quadrant IV.
Answer by math_helper(2461) (Show Source): You can put this solution on YOUR website!

cos(θ) = 1/2 ---> x/h = 1/2 ---> h = 2x

sin(θ) = -y/h = = = ... to 3 decimal places, that's -0.866
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