SOLUTION: Can you help me solve the equations for x, if 0is less than equal to x is less than equal to 2pi.
a) 8cos^2x=4
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a) 8cos^2x=4
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Question 751257: Can you help me solve the equations for x, if 0is less than equal to x is less than equal to 2pi.
a) 8cos^2x=4 Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! solve the equations for x, if 0is less than equal to x is less than equal to 2pi.
a) 8cos^2x=4
cos^2(x)=4/8=1/2
cos(x)=1/√2=√2/2
x=π/4, 3π/4 (in Q1 and Q2 where sin>0)
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