सिद्धान्तशिरोमणि: गोलाध्याय (भास्कराचार्य - मरीचि भाष्य एवं पं. केदारदत्त जोशी सविस्तार व्याख्या)

, does it say १५ or something else?
Look at the number:
ध - नु - रं - शाः ।
Then a number: is it १५?
Wait, arc of sine 2431:
Sine of 30° is 1719 (for R=3438, sin 30° = 1719, sin 45° = 2431).
Arc of 2431 is 45°!
Wait! Is that ४५ or १५?
Look at line 27:
"धनुरंशाः ४५ पलांशाः ।"
Wait, look at the first digit of the number:
Is it ४ or १?
Wait, in line 24: "दिगंशाः ४५" -> notice the shape of ४ in ४५!
Now look at line 27: the digit looks like ४ or १५?
Wait, let's look closely:
In line 27, it has: a loop like '४' or '१'?
Wait, the arc of 2431 is 45 degrees! Since sin(45°) = 2431!
In line 24: "दिगंशाः ४५ एषां [ज्य] २४३१".
Then "अक्षज्यैव २४३१ । अस्या धनुरंशाः ४५ पलांशाः ।"
So the dhanuramsha MUST be 45!