A1-A4 - Tufts
... First show that cos 4 is a constructible number (that is, given a unit length, this length can be constructed with straightedge and compass). Then, using the double-angle formula cos(2θ) = 2 cos2 θ − 1, explain how to use that length to construct cos π8 . Repeating this logic, conclude that π can be ...
... First show that cos 4 is a constructible number (that is, given a unit length, this length can be constructed with straightedge and compass). Then, using the double-angle formula cos(2θ) = 2 cos2 θ − 1, explain how to use that length to construct cos π8 . Repeating this logic, conclude that π can be ...
Segment Addition Postulate Activityname
... 6. Given the fact that EG = 10, FG = GH, and FG = 6, find the following lengths: • GH = _______ • EH = ________ • EF = ________ 7. For the same drawing as number 6, if EF = x, FH = 2x + 10, and EH = 35, what is the value of x? What is the length of FH? Explain (in words or show your calculations). ...
... 6. Given the fact that EG = 10, FG = GH, and FG = 6, find the following lengths: • GH = _______ • EH = ________ • EF = ________ 7. For the same drawing as number 6, if EF = x, FH = 2x + 10, and EH = 35, what is the value of x? What is the length of FH? Explain (in words or show your calculations). ...
