Neil designed a cottage that is 15 m wide. roof rafters are of equal length and meet at an angle ...? Neil designed a cottage that is 15 m wide. the roof rafters are the same length and meet at an angle of 80 degrees. The rafters hang over the retaining wall of 0.5 m. How long the rafters?
TIP: x / 8 = sin 40 °.
Posted on June 2, 2010.