Snyder, Virgil, 1869-1950, Sisam, Charles Herschel, b. 1879 · New York : H. Holt and Company · leaf 56
ndicular directed lines, forming the trihedral angle0-XYZ(Fig. 21), and three other mutually perpendicular directedlines through 0, forming the trihedral angle 0-XYZ, we shallshow that the trihedral angle 0-XYZ can be revolved in sucha way that OX and OZ coincide in direction with OX and… … the angle XOX by ij/. Let theaxes 0-XYZ be revolved as arigid body about OZ through theangle <f>, so that OX is revolvedinto the position OX. Denote thenew position of OF by OY^, sothat the angle YOY^ = (f>. Thetrihedral angle 0-XYZ is thus re-volved into 0-X^Y,Z. Now let0-XY^Z be revolved…
Geometry, Analytic
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