SOLUTION: Given 0≤θ≤360, solve 2sinθcosθ=cosθ Include all relevant diagrams and graphs in this solution.

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Question 1182145: Given 0≤θ≤360, solve 2sinθcosθ=cosθ
Include all relevant diagrams and graphs in this solution.
Answer by Edwin McCravy(20054) About Me  (Show Source):
You can put this solution on YOUR website!
      2sinθcosθ = cosθ
 2sinθcosθ-cosθ = 0
  cosθ(2sinθ-1) = 0

 cosθ=0;       2sinθ-1=0
θ=90°,270°;      2sinθ=1
                  sinθ=1/2
               θ=30°,150°

Edwin
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