Math Is Fun Forum

Layton

Guest

Need help with a trig problem

Solve the following equation for all radian solutions and if
0 ≤ x < 2π.
Give all answers as exact values in radians. Do not use a calculator. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)
sin x − 2 sin x cos x = 0

I have to find all radians solutions and 0<x<2pi

I got a. pik, 2pik+pi/3 , 2pik + 4pi/3
and b.0, pi/3, pi, 4pi/3

But those are not the correct answers and i dont know what i did wrong.

Thanks!

anonimnystefy

Real Member

From: Harlan's World

Registered: 2011-05-23

Posts: 16,049

Re: Need help with a trig problem

Hi Layton

Now you just look at values of x for different k's which are between 0 and 2π. You should get

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