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solve the multiple-angle equation.

0 votes

Equation : .

asked Mar 6, 2014 in TRIGONOMETRY by mathgirl Apprentice

1 Answer

0 votes

The equation is .

Let , the function has a period of , first find all solutions in the interval .

The function is negative in third and fourth quadrant.

So the solutions are ; and substitute in .

Finally, add multiples of to each of these solutions to get the general form

where n is integer.

Divide each side by 2.

The solutions are .

answered Mar 6, 2014 by casacop Expert
edited Mar 6, 2014 by casacop

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