r=a sin(x) r=a cos(2x) How would I solve the following equation I know cos(2x)=2cos^2-1,1-sin^2(x) But I am not sure where to begin.
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Set them equal to each other , the a's cancel, so you get . Now, , so , so you got , so . You can see that at , so . So your solution set would be where K is an integer.
can you finish?
Let's not forget, you can NOT divide by 0. What should have been done is... and then follow the abovementioned methods...
thanks for your responses. They have been most helpful.
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