40
—
S
HEET
M
ETAL
/HVAC
P
RO
C
ALC
TRIGONOMETRIC FUNCTIONS
Trigonometric
functions
are
available
on
the
Sheet
Metal/HVAC
Pro
Calc
calculator.
The
drawing
and
formulas
below
list
basic
trigonometric
formulas,
for
your
reference:
Given side A and angle a, find:
Side C
A
÷
a
ç =
(i.e.,
3 f ÷ 5 3 • 1 3 ç =
)
Side B
A
x
a
t =
Angle b
90°
–
a
=
Given side A and angle b, find:
Side B
A
÷
b
t =
Side C
A
÷
b
S =
Angle a
90°
–
b
=
Given side B and angle a, find:
Side A
B
÷
a
t =
Side C
B
÷
a
S =
Given side C and angle a, find:
Side A
C
x
a
ç =
Side B
C
x
a
S =
Given side A and side C, find:
Angle a
A
÷
C
= Ç ç
Angle b
A
÷
C
= Ç S
Given side B and angle b, find:
Side C
B
÷
b
ç =
Side A
B
x
b
t =
