Solve the following equation algebraically. Give a general solution. 3cos^{2}x+cosx=2
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Originally Posted by vanessa81929 Solve the following equation algebraically. Give a general solution. 3cos^{2}x+cosx=2 Can you solve
Originally Posted by vanessa81929 Solve the following equation algebraically. Give a general solution. 3cos^{2}x+cosx=2 can you finish?
cosx= 2/3 cosx= -1 what do you do next?
Originally Posted by vanessa81929 cosx= -2/3 cosx= -1 what do you do next? in the interval ... ... and ... you tell me what x value on the unit circle has a cosine of -1 if you want all solutions, add integer multiples of to all three solutions.
For the first one, x= 0.841+2npi And for the second one, x=pi+2npi Where are you getting a third solution from?
has two solutions, one in quad I and one in quad IV for , the general solution should be written ... ... and put away the calculator.
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