SOLUTION: If cos(Ѳ)= ½ and Ѳ is in quadrant IV, the value of cos((π/6)+Ѳ) is

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Question 215213: If cos(Ѳ)= ½ and Ѳ is in quadrant IV, the value of cos((π/6)+Ѳ) is
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
cos theta = .5,,,,taking arc cos
.
theta = 60,,,in IV quadrant this is 360-60 =300 degrees
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pi/6 rad * 180 deg / pi rad = 30 degrees
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cos { pi/6 + theta} = cos{30 +300} = .866
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