By applying the sine trigonometry, the approximate value of X is equal to: C. 9.46.
How to apply basic trigonometry.
In order to determine the value of X, we would apply basic trigonometry. From the diagram of the right-angled triangle shown in the image attached below, we can deduce the folloing parameters:
Thus, we would use the sine trigonometry to determine the value of X as follows:
Sinθ = Opp/Hyp
Sin72 = 9/X
0.9511 = 9/X
X = 9/0.9511
X = 9.46.
Read more on sine trigonometry here: https://brainly.com/question/20367642
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