पृष्ठम्:चन्द्रछायागणितम्.djvu/३६

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(The Moon's Shadow) 11. The sum or difference of the Zdn and the moon's latitude, when they are of the same or different directions, respectively, is called NatL The R sine of the angle got by subtracting the Nati from three signs, is called Para-Saiiku. 12. R minus or plus R sine (Oep-m/nt/j-moon), respectively, when (Oep-m/mtf-moon) is in the six signs from Aries or Libra, multiplied by R cos moon's latitude and divided by R, is called Bana. 13. BVna multiplied by R cos Zdn and divided by R is to be subtracted from the Para-Sahku. This is the Great Gnomon {Mahatt prabha or Maha-Sahku) of the moon, (/.<?., Maha-$ahku=R sine altitude the moon). Its R cosine is the^Great Shadow {Maha-Chaya).