SOLUTION: Solve cos2θ + cosθ = 0 for 0° ≤ θ < 90°.
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Question 861386: Solve cos2θ + cosθ = 0 for 0° ≤ θ < 90°.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let
Two solutions:
Not in the solution region.
and
Only is in the solution region.
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