Look at the unit circle shown below.
which statement is true? a the x-coordinate of p corresponds to cosθ , which has a period of 2π . b the x-coordinate of p corresponds to cosθ , which has a period of π . c the y-coordinate of p corresponds to cosθ , which has a period of 2π . d the y-coordinate of p corresponds to cosθ , which has a period of π .

The correct option is A.

Step-by-step explanation:

Draw a perpendicular form point P on x-axis.

Radius of unit circle is 1 . It means in triangle OPA

Hypotenuse = OP = 1 units

Adjacent= OA = x

Perpendicular = PA = y

In a circle angled triangle,

In triangle OPA,

The x-coordinate of P corresponds to cosθ.

The period of a unit circle is 2π.

Therefore, the correct option is A.

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

angle efh= angle egh