Write your answer in simplest radical form​

z = √3

Step-by-step explanation:

sin (30°) = z / 2√3

z = sin (30°) 2√3

z = √3

Step-by-step explanation:

The given trigonometric identity is .

Jana has to recall that, the cosine function is an even function.

For that matter, .

Jana has to apply this property by substituting  for  in the given identity to obtain,

.

Note that, the sine and the tangent functions are odd functions