In right triangle ABC, AB=10, AC=6 and BC=8 units. What is the distance from C to the midpoint of segment AB ?
In right triangle ABC, AB=10, AC=6 and BC=8 units. What is the distance from C to the midpoint of segment AB ?
Here's another way
The area of the triangle is (1/2) product of the legs = (1/2) (6) (8) = 24 units^2
So....calling AB the base....the altitude, h, is :
24 = (1/2) (10) h
24/5 = h
Call the altitude, CD
So.....
AD = sqrt [ AC^2 - CD^2] =
sqrt (6^2 - (24/5)^2) =
sqrt (36 - 576/25 ] =
sqrt [ 324/25] =
18/5
So....DM = 5 - 18/5 = 7/5
So CM =
sqrt ( DM^2 + CD^2 ] =
sqrt [ (7/5)^2 + (24/ 5)^2 ] =
sqrt [ 49 + 576] / 5 =
sqrt [625] /5 =
25 / 5 =
5