In right triangle DEF, it is known that Cos D = (12/13) and Cos F = (5/13). If FD = 39, then DE = ? Hint, draw the right triangle.

The value of the line segment is 36.

Step-by-step explanation:

The hypotenuse represents the longest side in the right triangle. In this case, FD represents the hypotenuse as it is a multiple of 13. Based on the trigonometric relations described in the statements, we get the following relationships by definition of cosines:

(1)

(2)

If we know that and , then the length of the line segment is:

The value of the line segment is 36.

the correct answer is 1: 2

step-by-step explanation:

hope this your welcome : )

step-by-step explanation: it is d