[1st Picture] Answer: x = 3.98
Explanation:
We are given the opposite side and adjacent side from our reference angle. This will use the tangent function. tanθ =
.
tan(53°) =

3tan(53°) = x
x = 3.98
[2nd Picture] Answer: x = 3.13
Explanation:
Here, we are given the opposite side from our reference angle and the hypotenuse. This will use the sine function. sinθ =
.
sin(23°) =

8sin(23°) = x
x = 3.13
[3rd Picture - #6] Answer: θ = 63.4°
Explanation:
Again, we are given the opposite side from our reference angle and the hypotenuse. This will use the sine function. sinθ =
. To find the angle measurement of theta at the end, we will use the inverse of sine.
sin(θ) =

(sin(θ)) =
(
)
θ = 63.4°