The following data at failure were obtained from two CU tests on a soil:
![1676_05c8d324-aa50-4463-bf1a-38f2975c4683.png](https://secure.tutorsglobe.com/CMSImages/1676_05c8d324-aa50-4463-bf1a-38f2975c4683.png)
(a) Determine the friction angle for each test.
(b) Determine the change in dilation angle between the two tests, if a CD test were carried out.
(c) Determine the undrained shear strength for each test.