Question

In the image below, ∠B≅∠E. What similarity criterion proves that △ABC~△FED?

Answer 1

Answer: a

sin

A

=

b

sin

B

Y

sin

60

∘

=

5

sin

36

∘

Y

=

5

sin

36

∘

(

sin

60

∘

)

Y

=

7.36

≈

7.4