Owner's manual

USER’S GUIDE —59

(Cont’d)

KEYSTROKE DISPLAY

1. Enter side a, b and c:

oo 0.

35f8i3/4Ç4 A35FEET 8-3/4 INCH

21f8i15/16Ç5

B21FEET 8-15/16 INCH

24f3i7/8Ç6 C24FEET 3-7/8 INCH

2. Calculate and input Theta by subtracting Angle “A” (found by the

Law of Cosines) from known angle of 180°:

180–Ç9 /

A 101.5687°

= 78.43128 (Theta θ)

p /

Ø 78.43128°

3. Recall stored “c” and input as “r” the Hypotenuse:

®6=d R24

FEET 3-7/8 INCH

4. Calculate “x”:

R X4FEET 10-9/16 INCH

5. Calculate “y”:

r Y23FEET 9-15/16 INCH

Sheet Metal Panels for an Irregular Hip Roof

A contractor is going to cover one end of an Irregular Hip Roof with

sheet metal panels. The length of the roof along the eave is 98 Feet

5-1/4 Inches, the length along the left hip is 38 Feet 10-11/16

Inches, and the length along the right hip is 73 Feet 1-1/8 Inches.

Find the angles between the roof edges.

KEYSTROKE DISPLAY

1. Enter lengths:

98f5i1/4Ç4 A98FEET 5-1/4 INCH

38f10i11/16Ç5

B38FEET 10-11/16 INCH

73f1i1/8Ç6 C73FEET 1-1/8 INCH

2. Calculate the angles between the roof edges:

Ç9 /

A 119.9081°

9 /

B 20.02713°

9 /

C 40.06473°

9 AREA 1232.046 SQ FEET

STORED