Young, George, jr, Baxter, Hubert Eugene, joint author · New York, The Macmillan Co. · leaf 127
d (16, 8, 8). Find the angle between cd and F. 110 DESCRIPTIVE GEOMETRY [VI, § 99 99. To Draw the Traces of a Plane, Given One Trace andthe Angle of Inclination to H or V. I. FiEST Method. In Fig. 110, let the trace ZZ be givenand let the required angle of inclination to H be 60°. It isrequired to… … angle at o being the true angle between Z and H, or 60°. Im-agine this triangle to have been rotated into V, on Y Y as anaxis, a* moving to a*. It will now be seen in its true size, thehypotenuse making an angle of 60° with HA. Drawing thehypotenuse, the other apex, h, is located at 6 . This is a…
Geometry, Descriptive
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