Sunday, May 23, 2010

Trig problem involving the roof of a house!!?

Josh is building a garden shed that is 4m wide. The two sides of the roof must meet at an 80 degree angle and be equal in length. How long must each rafter be if he allows for a 0.5-m overhang?

Trig problem involving the roof of a house!!?
If the overhang is 0.5m horizontally then the length of each rafter is





L= 2.5/sin(40°) = 3.889m





If the rafter extends 0.5m along its own length, then the length of each rafter is





L = 2/sin(40°) = 3.611m

my fish

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