You can only rotate text that is contained in a drawing object.
Choose View - Toolbars- Drawing to open the Drawing toolbar.
Select the Text icon .
Drag in your document to draw the text object, and then type your text.
Click outside of the object, then click the text you entered. Click the Rotate icon on the Drawing Object Properties toolbar.
Drag one of the corner handles of the text object.
You can also right-click the text object, choose Position and Size, click the Rotation tab, and then enter a rotation angle or a new position for the object.