solve 2-3cos x=5+3cox x for 0 degree <= x <= 180 degree

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24-05-2018
Mathematics

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solve 2-3cos x=5+3cox x for 0 degree <= x <= 180 degree

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carlosego carlosego · Answer 1 · 2018-05-24T15:55:14+02:00

carlosego carlosego

24-05-2018

You have the following expression given in the problem above: 2-3co x=5+3cosx. To solve it, you must apply the proccedure shown below:
You have:
2-3cosx=5+3cosx
Solve for cosx:
-3cosx-3cosx=5-2
-6cosx=3
cosx=3/-6
cosx=-1/2
x=120°

The answer is: 120°

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