1. The length of the hypotenuse of a 30-60-90 triangle is 7. Find the perimeter.
A) 7/2+21/2 sqrt 3
B) 21+7 sqrt 3
C) 7+21 sqrt 3
D) 21/2 + 7/2 sqrt 3
Could someone please help me, I don't know how to do this. Thank you!
sketch a right-angled triangle with angles
30-60-90
label the sides 1 , √3 and 2, with 1 opposite the 30°, etc
so 2 --- x 3.5 -----> 7
and 1 -- x 3.5 -----> 3.5 or 7/2
and √3 -----------> 7√3/2
perimeter = 7 + 7/2 + 7√3/2
= 21/2 + (7/2)√3
My bad Mr OJ I apologize
I'm gonna do more research on the 30-60-90 triangle. Thank you so much though for helping me!
yes its d
I strongly suggest that you memorize the
1 , √3, 2 <------> 30-60-90° triangle.
You will meet it again and again if you continue to study math
aughhhhhhhhhhhhhhhhhh
To find the perimeter of the triangle, we need to know the lengths of all three sides.
In a 30-60-90 triangle, the lengths of the sides are proportional to the following ratios:
Short leg: Long leg: Hypotenuse
1 : √3 : 2
Given that the length of the hypotenuse is 7, we can find the lengths of the other two sides using these ratios.
Short leg = 1/2 * hypotenuse = 1/2 * 7 = 7/2
Long leg = √3 * short leg = √3 * (7/2) = 7/2 * √3
Now, to find the perimeter, we need to add up the lengths of all three sides:
Perimeter = short leg + long leg + hypotenuse
= 7/2 + 7/2 * √3 + 7
Simplifying this expression, we get:
Perimeter = 7/2 + 7/2 * √3 + 7/1
Combining the like terms, we have:
Perimeter = 7/2 + 7/2 * √3 + 14/2
Factoring out the common denominator, we get:
Perimeter = (7 + 7√3 + 14) / 2
Simplifying the expression inside the parentheses, we have:
Perimeter = (21 + 7√3) / 2
Therefore, the correct option for the perimeter of the 30-60-90 triangle with a hypotenuse of length 7 is:
A) 7/2 + 21/2√3