U
SER
’
S
G
UIDE
— 3
Dividing Dimensions ..................................................................29
Percentage Calculations ............................................................30
MEMORY OPERATION ................................................................31
EXAMPLES — USING THE SHEET METAL/HVAC PRO ..............33
BASIC EXAMPLES .......................................................................34
Adding Linear Measurements....................................................34
Converting Feet-Inch-Fractions to Decimal Feet and
Fractions of an Inch................................................................34
Converting Feet-Inches to Meters and Millimeters ....................34
Adding and Subtracting Fractions of an Inch.............................35
Converting Fractions to Decimals..............................................35
Converting Decimals to Fractions..............................................35
Finding Length (of Iron) Required..............................................35
Circumference of a Circle ..........................................................36
Circumference and Area of a Circle...........................................36
Square Area (x
2
).........................................................................36
Area of a Rectangle ...................................................................36
Area of a Triangle ......................................................................37
Volume of a Rectangular Box ....................................................37
Volume of a Rectangular Container, Converting to
Cubic Meters...........................................................................37
Volume of a Cylinder..................................................................38
Volume of a Cone ......................................................................38
Cubed Function..........................................................................39
Cubed Root Function.................................................................39
Scientific Notation ......................................................................39
TRIGONOMETRIC FUNCTIONS..................................................40
Finding Sine, Cosine, Tangent...................................................41
Finding “Angle A” (ArcSin, ArcCos, ArcTan) ..............................41
Using Trigonometry to Find Unknown Side ...............................41
Using Trigonometry to Find Unknown Angle or Side.................42
Converting Pitch to Angle/Tangent.............................................45
D:M:S EXAMPLE ..........................................................................45
Converting Degrees:Minutes:Seconds ......................................45
VELOCITY PRESSURE/VELOCITY EXAMPLES.........................46
Converting Velocity Pressure to FPM........................................46
Converting FPM to Velocity Pressure........................................47
OFFSET EXAMPLES....................................................................48
Offset, Basic Example................................................................48
OGEE Offset in Feet-Inch-Fractions..........................................49
OGEE Offset, in Millimeters.......................................................50
