a
R′ =
a
R—
∴ M V = T V.
[p102]
]III.
ANALYSIS OF PROBLEM XV.
We proceed to take up the general condition of the second problem, before left unexamined, namely, that in which the vertical distances B C′ and A C ([Fig. 6.] [page 13]), as well as the direct distances T D and T D′ are unequal.
In [Fig. 6.], here repeated ([Fig. 76.]), produce C′ B downwards, and make C′ E equal to C A.
