12-10-2016
Mathematics

contestada

how do you find x when 18²=10²+12²-21012cos(x)

Respuesta :

CoverOnCleverKing CoverOnCleverKing

12-10-2016

You would have to get everything to one side except for the cosine(x)

It would look somewhat like this

cosx = (18^2-100-144)/-240

Once calculated out. You find where cosx where equal that answer.

So it would be where does cosx = -1/3. Then you solve for that

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