Verified Answer :

olemakpadu

Using Sine.

Sine = Opposite / Hypotenuse

sin 60° = a / (6√3)                        But sin60° = √3/2

√3/2 = a/(6√3)

Cross multiply

2a = 6√3 √3

2a = 6 √(33)

2a = 63

a = 63/2

a = 3*3 = 9

Option E.

Hope this helps.

GoDair

Answer:

The answer is E. 9

Step-by-step explanation:

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