SOLUTION: Which of the following contains a false solution to the equation sinθ cotθ-cos^2 θ=0? A. 90 degrees and 270 degrees B. 0 degrees and 180 degrees C. 0 degrees an

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Question 344829: Which of the following contains a false solution to the equation sinθ cotθ-cos^2 θ=0?
A. 90 degrees and 270 degrees
B. 0 degrees and 180 degrees
C. 0 degrees and 270 degrees
D. 90 degrees
Thank you, Thank you so much for your help!!!!!
Answer by Edwin McCravy(20056)   (Show Source): You can put this solution on YOUR website!


try A
A. 90 degrees and 270 degrees









Those are true solutions.

Try B
B. 0 degrees and 180 degrees



Since  is undefined, B is a false solution.
No use to try 180°.

Try C
C. 0 degrees and 270 degrees



Since  is undefined, C is a false solution.
Even though 270° is a solution, as we saw in A, 0° is not.

Try D
D. 90 degrees

We saw in part A that 90° is a solution. 

B and C are the only ones which contain a false solution.

Edwin
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