In the triangle ABC, one angle A=70. The point D is chosen on the segment AC such that the angle bisector AE intersects the segment BD at the point H, with the following ratios AH/HE=3/1,BH/HD=5/3. Find the angle C.

spainhour83lz

spainhour83lz

Answered question

2022-08-10

In the triangle ABC, one has A = 70 o .
The point D is chosen on the segment A C such that the angle bisector A E intersects the segment B D at the point H, with the following ratios
A H H E = 3 1 , B H H D = 5 3 .
Find the angle C.

Answer & Explanation

Bradley Forbes

Bradley Forbes

Beginner2022-08-11Added 12 answers

Examine" the="" two="" ratios="" as="" follows, 5 3 = B H H D = A B E A E D
(1) = B E B C A B C E C B C A D A C A B C = B E E C ( C D A D + 1 )
Similarly,
(2) 3 1 = A D C D ( E C B E + 1 )
Combine (1) and (2) to obtain
B E E C = 1
Since AE is the angle bisector, A B E and A E C are congruent, and therefore A B C is an isosceles triangle, which yields,
C = 1 2 ( 180 70 ) = 55

Do you have a similar question?

Recalculate according to your conditions!

New Questions in Elementary geometry

Ask your question.
Get an expert answer.

Let our experts help you. Answer in as fast as 15 minutes.

Didn't find what you were looking for?