This IPython Notebook contains calculations on what angle and bevel to set a compound miter saw make a cheek cut where a hip rafter connects to a ridge board and jack rafters connects to a hip rafter. These calculatins do NOT assume that both the front roof and side roof are at the same pitch.

The final output contains the saw angles and bevels needed to cut following results:

Hip rafter angle

Hip rafter cheek cut bevel angle

Front roof cheek cut bevel angle

Side roof cheek cut bevel angle

As a check the pitch of the hip rafter is also calculated.

Images are for name clarification

(Summary is at the bottom.)¶