Missing lengths of a 30°-60°-90° Special Right Triangle given Long Leg length = 9

Short Leg length =
Long Leg length/√3

Short Leg length =
9/√3

Rationalize to remove the radical from the denominator:
Short Leg length =
9 * √3/√3 * √3

Short Leg length =
9√3/3

Short Leg length = 3√3 = 5.196152422707
Hypotenuse length = 2 * Short Leg length
Hypotenuse length = 2 * 3√3
Hypotenuse length = 6√3 = 10.392304845413

The solution above and other related solutions were provided by the 30°-60°-90° Special Right Triangle Application. 

Find Missing Lengths of a 30-60-90 Special Right Triangle

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