# math URGENT

Find all values of x such that sin 2x = sin x and 0 x 2π. (List the answers in increasing order.)
x=
x=
x=
x=
x=

1. 👍 0
2. 👎 0
3. 👁 865
1. sin 2x - sinx = 0 , 0 < x < 2π

2sinx cosx - sinx = 0
sinx(2cosx - 1) = 0
sinx = 0 or cosx = 1/2

for sinx = 0
x = 0 , π , 1π

for cosx = 1/2
x = π/3 or x = 5π/3

1. 👍 0
2. 👎 1
posted by Reiny

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