Question 1131498: What is cos(θ+30°) if the options include 37/26, -5+12√3/26, -12+5√3/26, 5+12√3/26?
Answer by greenestamps(13216)   (Show Source):
You can put this solution on YOUR website!
On first reading, my thought was that we obviously can't answer the question, because we don't know what theta is.
Then I thought maybe all but one of the answer choices was a value less than -1 or greater than 1, which would make them invalid values for cosine. But all three of the answer choices with radicals can, if parentheses are placed right, have values between -1 and 1.
So my conclusion is that the problem is faulty, or that your statement of the problem is incomplete.
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