Answer:
Given
equations of lines is x = ay + b, z + cy + d
equation of
given in symmetrical form is
?.(1)
Again
given equation of lien is x = a?y + b?, z = c?y + d?
equation of
given line in symmetrical form is
?(2)
Also
direction ratios of line (1) and (2) are respectively a, 1, c are a?, 1, c?
Since
it is given that lines are perpendicular, so
a
× a? + 1 × 1+ c × c? = 0
i.e.,
aa? + cc? + 1 = 0
which
is proved.
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