Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 143
F\g. 102. The combined changes ofthus: Y § 91 and 93 are represented … Fig. 103. x — h-\-x cos a -\- y cos /?,y = k -{- x sin a -^ y sin ^. TRANSFORMATION OF CO-ORDINATES 12: 94. To transform from one set of oblique axes toanother. Y
Geometry, Analytic
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