463,100 views
8 votes
8 votes
What is the area of triangle ABC?
C
12
60°
60°
A
D
B

What is the area of triangle ABC? C 12 60° 60° A D B-example-1
User Gregoryp
by
2.5k points

1 Answer

28 votes
28 votes

Answer:

Area of the triangle is 36√3

Step-by-step explanation: Hope this will help

The hypotenuse of each 30 - 60 - 90 triangle is 12

The base length is 6 + 6 = 12 because the triangle is equilateral and the

altitude of the triangle divides the base into two equal parts and the altitude (DC) is the height of the triangle.

Now you have two 30 - 60 - 90 triangles with the hypotenuse of 12, the short leg = 6 and you need to find the length of DC.

Finding DC .

a² + b² = c²

6² + b² = 12² 0r the long leg = short leg times √3

36 + b² = 144 6√3

b² = 108

b = 6√3

Area of a triangle = 1/2bh

= 1/2(12)(6√3)

= 6(6√3) = 36√3

User Renderbox
by
3.4k points