You can
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Use the figure. Find the lengths of the remaining sides of the triangle. See Example 10. (Objective 3)
c = 4
A right triangle has three labeled sides and three labeled angles.
One leg is labeled a.
One leg is labeled b.
The hypotenuse is labeled c.
The angle opposite the side labeled a is labeled 30°.
The angle opposite the side labeled b is labeled 60°.
The angle opposite the hypotenuse is a right angle.
a =
b =
Where's the figure/diagram? Do you really think that we have example 10 in front of us?
c = 4 indicates the hypotenuse
Given the hypotenuse of a 30-60-90 right-triangle, the side opposite the smaller angle ("a" in this case) = 
Given the hypotenuse of a 30-60-90 right-triangle, the side opposite the larger angle ("b" in this case) = 
