Hello, stud_02!

I found a solution . . . but theremustbe a better way!

In

Show that: .Code:C * *| * * | * b=4 * | * a=5 * |y * * | * * | * * | * A * - - - * - - - - - - - * B : x D c-x : : - - - - - c - - - - - :

In right triangle .[1]

In right triangle .[2]

Equate [1] and [2]: . .[3]

Substitute into [1]: . .[4]

We are given: .

. . . .

Substitute [3] and [4]: .

. . which simplifies to: .