How do you solve cos x 0.4 for 0 to two pie?

Anonymous

∙ 10y ago

Updated: 8/21/2019

I assume that you want to solve cos(x) = 2*pi, not pie!

arccos(0.4) = 1.1593 radians.

This is the solution in the range 0 to pi. There is another solution which is at 2*pi - 1.1593 = 5.1239 radians.

Note that arccos appears on most calculators as "cos to the power -1".

Wiki User

∙ 10y ago

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