I did research and try to fix this issues with a easy way, unfortunately I didn’t find any straight forward way to rotated text angle into 45° or 60° in MS Word Table, but I got one alterative way to change the text angle in any direction; its little hard but this is the only way right now. (If you have better idea you can share in comment)
1. Draw a text box; type your text and rotated text book direction, double click on text book, click on “Shape Outline” and select “White” color, this will hide text box outlines
2. Now again select the text box right click and than “Send to back” – “Send behind text” this will send text box behind the table.