Asked by Paris
How would you solve:
5 cos x + 2 = 0
In the domain of 0 degrees to 360 degrees
5 cos x + 2 = 0
In the domain of 0 degrees to 360 degrees
Answers
Answered by
Luke
5 cos x + 2 = 0
5 cos x = -2
cos x= -2/5
arccos (-2/5) = answer (check to see if you are supposed to answer in degrees or radians - change calculator settings accordingly)
5 cos x = -2
cos x= -2/5
arccos (-2/5) = answer (check to see if you are supposed to answer in degrees or radians - change calculator settings accordingly)
Answered by
Steve
also recall that cos(x) is negative in QII and QIII
Answered by
Henry
Cos x = -0.40
X = 113.6o
X = 113.6o
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