Asked by don
Solve 2cos sq x = 1 using the unit circle.
Answers
Answered by
Reiny
2 cos √x = 1
cos √x = 1/2
√x = π/3 or √x = 5π/3
x = π^2/9 or x = 25π^2/9
cos √x = 1/2
√x = π/3 or √x = 5π/3
x = π^2/9 or x = 25π^2/9
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