Definition of Sine
n.
1.
(Trig.)
The
length
of
a
perpendicular
drawn
from
one
extremity
of
an
arc
of
a
circle
to
the
diameter
drawn
through
the
other
extremity
.
Artificial sines
logarithms
of
the
natural
sines
,
or
logarithmic
sines
.
Curve of sines
See
Sinusoid
.
Natural sines
the
decimals
expressing
the
values
of
the
sines
,
the
radius
being
unity
.
Sine of an angle
in
a
circle
whose
radius
is
unity
,
the
sine
of
the
arc
that
measures
the
angle
;
in
a
right-angled
triangle
,
the
side
opposite
the
given
angle
divided
by
the
hypotenuse
.
See
Trigonometrical
function
,
under
Function
.
Versed sine
that
part
of
the
diameter
between
the
sine
and
the
arc
.
prep.
1.
Without
.
Related Words
circular
function
,
sin
,
trigonometric
function
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