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Perspective; the old and the new method .. (1921)
Percival, A. S. (Archibald Stanley), 1862- · London, New York [etc.] Longmans, Green and co. · leaf 47
angent Cotangent Secant Cosecant 10° •1736 •9848 •1763 5-6713 1-0154 5^7588 80° 20° ■3420 ■9397 •364 2-7475 1^0642 2^9238 70° 30° •5 •8660 •5774 1-7321 M547 2-0 60° 40° •6428 •7660 •8391 1-1918 1^3054 1-5557 50° 45° •7071 •7071 1^0 1-0 1^4142 1-4142 45° Cosine Sine Cotangent Tangent Cosecant Secant… … Fio. 22. Fio. 23. II. CROYDON: Printed by Roffey & Clark, 12, High Street,and Middle Street.Perspective
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