Question

Find all solution of the function 2sinx-1=0 in the interval [0,2(pie)]

Answer 1

When does sinx = 1/2?

Answer 2

2Sinx=1
Sin (x) = 1/2

So you tell me, Sines of what angles are equal to 1/2 ?

Answer 3

is it negative 1/2 or postive

Answer 4

Positive

Answer 5

I'll give you a hint. Recall 30-60-90 triangle rules from Geometry :)