Answer:
45
Step-by-step explanation:
9x60=540
540/12= 45
Answer:
none
Step-by-step explanation:
first thats not a number
Answer:
x=6765
Step-by-step explanation:
To Find :
The value of side CD.
Solution :
Applying Pythagoras theorem in ΔABC :
....1)
Applying Pythagoras theorem in ΔACD and ΔCDB :
....2)
....3)
Adding equation 2 and 3, we get :
...4)
Solving equation 1) and 4), we get :
![AD^2 + 2CD^2 + DB^2 = 13^2\\\\9^2 + 2CD^2 + ( 13 - 9 )^2 = 13^2\\\\2CD^2 = 72\\\\CD = 6](https://tex.z-dn.net/?f=AD%5E2%20%2B%202CD%5E2%20%2B%20DB%5E2%20%3D%2013%5E2%5C%5C%5C%5C9%5E2%20%2B%202CD%5E2%20%2B%20%28%2013%20-%209%20%29%5E2%20%3D%2013%5E2%5C%5C%5C%5C2CD%5E2%20%3D%2072%5C%5C%5C%5CCD%20%3D%206)
Therefore, length of CD is 6 .