3. Special Right Triangles
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Notice that the given figure is a 30^(∘)-60^(∘)-90^(∘) triangle.
x=4sqrt(3), y=8sqrt(3)
Notice that the given right triangle has a marked angle measuring 60^(∘). Therefore, by the Triangle Angle Sum Theorem the measure of the third angle must be 30^(∘).
.LHS /sqrt(3).=.RHS /sqrt(3).
a/b=a * sqrt(3)/b * sqrt(3)
sqrt(a)* sqrt(a)= a
Calculate quotient
Rearrange equation
We found that the measure of the shorter leg is 4sqrt(3). Also, in a 30^(∘)-60^(∘)-90^(∘) triangle, the hypotenuse is 2 times the length of the shorter leg. y= 2 * 4sqrt(3) ⇔ y=8sqrt(3)