Schmall, Charles Nelson. [from old catalog] · New York, D. Van Nostrand company · leaf 79
ween the following pairs of lines. (1) 3 X - 4 ?/ = 2, 2 X - 2/ = 0. Ans. tan 0 = - ^ ^ + ^;^ = i, a b (2) (3) X - 2 ?/ = 0 X _ ?/a b 2x + 3 ?/ = 1 1. Ans. tan (p = r^ 2 ah 16. Find the line through the point (-1, - 1) and _L to the line y -2x=l. 17. Find the foot of the ± from origin to 3 x - 6 2/… … Fig. 69. ^3- 70. AB is the given line, P (x^, ij,) the given point, and ABline through P parallel to AB. The equation to AB is evidently x^ cos a + 2/i sin a = i^. In Pig. (1), PM = DD = 2h - i^ = ^1 cos a + ?/i sm a - p. In Fig. (2), PM = DD := p - j9i = i? — ccj cos a + ?/i sm a. THE STRAIGHT…
Geometry, Analytic
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