Sam Z. answered • 10/23/20
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cos(x)=-0.31
x=71.9407.........° and 108.0592........°
The way I did it is by using acos.
In this case pi=180°.
Jessie H.
asked • 10/23/20cos(x)=-0.31 on 0 ≤ x < 2 π
Solve cos(x)=−0.31 on 0≤x<2π There are two solutions, A and B, with A < B.
I tried this several times and just don't know where I'm messing up. The answers I got the last time were A=1.88 and B=4.396 and both are wrong.
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