Question

Help?

Answer 1

12

Answer 2

x = sqrt(17^2 - 15^2)

x = sqrt(289 - 225)

x = ???

Answer 3

Although you may go more than one route, the simplest method applied, without any trigonometry is to apply the Pythagorean theorem twice.

First in ΔABC, to solve for side BC, and then in ΔADC, to solve for side DC. Then side
DB = BC - DC. Understand?

Answer 4

then take the square root of that

Answer 5

that will give you x

Answer 6

which is the length of CD