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The only YouTube video where you will find formulas for calculating every angle on the roof without a carpenter's calculator #angle of inclination of corner and valley rafters #at what angle do corner rafters meet in the ridge? #how to calculate the length of a truss #how to calculate the angle of tracing a truss with a corner rafter? #hip roof #multi-pitch roof #roof truss E-mail: [email protected] / 915433402194146