SURENDRA K. answered • 07/22/15
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Cos(u)=-1/2
This shows that it is second or third quadrant.
Correct Answer is ( c)
Samantha L.
asked • 07/22/15Which value of u make the equation 2(cosu)= -1 true?
a) 30 degrees
b) 60
c) 120
d) 135
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