Answer:
Part a: The single shear is 17.0 MPa
Part b: The double shear is 8.5 MPa
Step-by-step explanation:
The free body diagram is given as attached.
From the FBD, the
value of θ is given as

Taking moment about A gives


Now applying balance of Forces

For Forces along y axis

Similarly Forces along x axis

Now A is calculated as

On basis of this value of A, the single shear is given as

The single shear is 17.0 MPa
On basis of this value of A, the single shear is given as

The double shear is 8.5 MPa