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254 oN THE ASTRONOMICAL COMPUTATIONS 



mean motion from the first three sines of anomaly ; 

 added in the next six, and subtracted in the last 

 three. 



Example, for the sun, in 5 14' of anomaly. The 

 co-sine of 5 14' in the Hindu canon is 3422' 17" $2'". 

 The paridhi circle in this point, found before, is 13 



5 8' n"; dnd^' ^ffift . * -**^^' 48" the 

 co-sine c b in the epicycle; then, as radius 3438 

 is to the sun's mean motion 59/ 8" per day, or 

 59" 8'' per danda, so is the co-sine cb — 132' 48", ' 

 to the equation required, % 17" per day, or 2" 17'" 

 per danda. The motion of the sun's apsis is so slow 

 as to be neglected in these calculations ; but that of 

 the mooasis considered, in order to know her mean 

 motion from her apogee, which is 783' 54". 



In this manner may be determined the equation of 

 the mean to the true anomaly and motion for each 

 degree of the quadrant ; and which will be found to 

 agree with the"tables of Macaranda. The following 

 cables are translated from that book ; 



* 



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t * V 



