A 30-60-90 triangle has a perimeter of . If the shorter leg is , what is the value of ?
Options
A
B
C
D
Answer & Analysis
Answer
A
Analysis
In a 30 - 60 - 90 triangle, the ratios of the sides are respectively.
Let the side opposite the angle (the shorter leg) be , the side opposite the angle (the longer leg) be , and the side opposite the angle (the hypotenuse) be
The perimeter of a triangle is the sum of the lengths of its sides. So for our 30 - 60 - 90 triangle, the perimeter
We are given that the perimeter
So we have the equation:
Want More Practice Questions?
Access thousands of practice questions with detailed explanations on Scholardog.