Angle x is a third quadrant angle such that cos x= −2/5 .
What is the exact value of cos...
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Mathematics, 03.03.2020 20:51 faithrawlins14
Angle x is a third quadrant angle such that cos x= −2/5 .
What is the exact value of cos(x/2) ?
Enter your answer, in simplest radical form, in the box.
cos(x/2) =
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