Sharp el-9950 - Try It

51
Chapter 3: Manual Calculations
If the base length of the right triangle is 505.8 feet, and the angle
of elevation is 36 degrees, then the following expression can be
derived:
 theheightoftheMendocinotree(ft.)=505.8ft.×tan(36°)
1. Verify/changethecalculator’sangleunit.
2. Usethecalculator’strigonometricfunctionkeytoenter/perform
the calculation.
1. Sincetheangleofelevationismeasuredindegrees,the
calculator’sanglesettingwillneedtobematchedwiththat.
Press
@
;
to bring
uptheSETUPmenu.
2. OntherightsideoftheSETUP
menu, the current setup will
be displayed. Make sure that
the top line is indicated as
Deg (i.e., degrees). If not, then
the angle system will need
tobechanged.Press
B
to select B DRG, then press
1
to select 1 Deg.
3. Now,let’sworkontheactualcalculationpart.Pressthe
#
keytoentertheCalculationscreen,andpress
C
to clear
any screen entries.
2. Try it!
TheMendocinoTree,acoastredwoodgrowinginMontgomeryWoodsState
ReserveinCalifornia,isknowntobethetallestlivingtreeintheworld.Youareto
find out how tall the tree is by using the following factors:
• Thedistancefromyoutothebottomofthe
tree is exactly 505.8 feet, and the tree
stands vertically.
• Theangleofelevationbetweenthetop
and the bottom of the tree is 36 degrees
CONCEPT
PROCEDURE