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Principle Of Mathematical Induction

Question

Find the general solutions of the following trigonometric equation:

$cos space 2 straight x space plus space cos space straight x space equals space 0$

Solution

Solution not provided.
Ans. $open table attributes columnalign right end attributes row cell straight x equals left parenthesis 2 straight n plus 1 right parenthesis straight pi over 3 end cell row cell or space straight x space equals space left parenthesis 2 straight n minus 1 right parenthesis straight pi end cell end table close curly brackets comma space straight n space element of space straight Z$

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Principle Of Mathematical Induction

Find the general solutions of the following trigonometric equation:

$cos space 2 straight x space plus space cos space straight x space equals space 0$

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