Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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<
1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
541 - 570
571 - 600
601 - 630
631 - 660
661 - 690
691 - 701
>
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040/01/298.jpg
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<
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>B A D</
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<
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<
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>4034</
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<
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<
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<
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<
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<
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<
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<
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<
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>391992</
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<
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<
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>293994</
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<
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<
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<
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>391992</
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<
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<
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<
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>27</
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<
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/>
</
row
>
<
row
>
<
cell
>145</
cell
>
<
cell
>3953</
cell
>
<
cell
>23932</
cell
>
</
row
>
<
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>
<
cell
/>
<
cell
>1058</
cell
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<
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<
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<
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>3</
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>In the ſixth operation the chord, the ſines and Parallax are as
<
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followeth, and the ſtar is found to be about 4 ſemidiameters; let
<
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us ſee whether it will be reduced, abating the Parallax from 8
<
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type
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m.
<
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<
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/>
to 1
<
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type
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m.
<
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onely; Here is the operation, and the ſtar raiſed but to
<
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27. ſemidiameters or thereabout; therefore the correction of 7
<
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m.
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<
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in 8
<
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m.
<
emph.end
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doth not
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<
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>B D</
cell
>
<
cell
>Chord</
cell
>
<
cell
>1920</
cell
>
</
row
>
<
row
>
<
cell
>B D C</
cell
>
<
cell
>Sine</
cell
>
<
cell
>40248</
cell
>
</
row
>
<
row
>
<
cell
>B C D 8
<
emph
type
="
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gr.
<
emph.end
type
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</
cell
>
<
cell
>Sine</
cell
>
<
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>233</
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>
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<
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<
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<
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<
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<
cell
>1920</
cell
>
<
cell
/>
</
row
>
<
row
>
<
cell
/>
<
cell
>804960</
cell
>
<
cell
/>
</
row
>
<
row
>
<
cell
/>
<
cell
>362232</
cell
>
<
cell
/>
</
row
>
<
row
>
<
cell
/>
<
cell
>40248</
cell
>
<
cell
/>
</
row
>
<
row
>
<
cell
/>
<
cell
>26</
cell
>
<
cell
/>
</
row
>
<
row
>
<
cell
>29</
cell
>
<
cell
>772</
cell
>
<
cell
>76160</
cell
>
</
row
>
<
row
>
<
cell
/>
<
cell
>198</
cell
>
<
cell
/>
</
row
>
<
row
>
<
cell
/>
<
cell
>1</
cell
>
<
cell
/>
</
row
>
</
table
>
<
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">
<
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>In the eighth operation the chord, the ſines, and the Parallax,
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as you ſee, are theſe enſuing, and hence the Authour calculates
<
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the height of the ſtar to be 1. ſemidiameter and an half, with the
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Parallax of 43.
<
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type
="
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min.
<
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type
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which reduced to 1
<
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type
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min.
<
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yet
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/>
ing giveth the ſtar leſſe remote than 24. ſemidiameters, the
<
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ction therefore of 42.
<
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type
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min.
<
emph.end
type
="
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"/>
is not
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</
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</
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