応用例題のキー操作例 三角比 例 下図においてA地点からB地点の距離(c)と角B(θ)が わかっているとき、A−C間の距離(b)とB−C間の距 離(a)は? 1辺の長さと角度から、三角比を使って他の辺 解説 の長さを求めることができます。 ― c sin θ = ― c cos θ = tan θ = ― a ― c sin θ = から、b=c ・ sin θ から、a=c ・ cos θ ― c cos θ = キー操作...
Page 34
辺aと角Bがわかっているときは、以下の式を使って ● 求めます。 から、b=a ・ tan θ tan θ = ― a から、c= ― c cos θ = cos θ 例 下図において2辺の距離がわかっているとき、角B(θ)は? 解説 2辺の長さから、三角比を使って角度を求める ことができます。 ― c から、 sin θ = ‥‥‥‥‥① θ =sin ― c ― c から、 cos θ...
Page 35
正弦定理 下図において辺a、角A、角Bがわかっているとき、辺 b・辺cの長さと角Cの角度は? 解説 2角と1辺より、正弦定理を使って他の辺と角度 を求めることができます。 = = sinB sinC sinA 上記定理から、 sinB sinC b = a× c = a× sinA sinA キー操作 ªm0 G (DEGシンボルが表示されるまで繰り返す) 180-40-60= → 80° (C) 2s40/s60= → 1.484454398m (b) 2s80/s60= → 2.274316085m (c) – 35 –...
Page 36
余弦定理 下図において、 a=14.7cm、 b=17.8cm、 θ=43° 32'54'' の場合のcの長さを求めます。 2辺と1角より、余弦定理を使って他の辺の長さ 解説 を求めることができます。 =b +c −2bc・cosAから a= b +c −2bc・cosA ‥‥‥‥① =c +a −2ca・cosBから b= c +a −2ca・cosB ‥‥‥‥② =a +b −2ab・cosCから c= a +b −2ab・cosC ‥‥‥‥③ この例題では③を使用します。 キー操作 ªm0 G (DEGシンボルが表示されるまで繰り返す) ⁄(14.7L+17.8L- 2*14.7*17.8*u43o32o54 → 12.39480134 cm (c) – 36 –...
Page 51
English Operation Guide CONTENTS INTRODUCTION Operational Notes ............E-3 Hard Case ..............E-4 DISPLAY ................E-4 BEFORE USING THE CALCULATOR Key Notation Used in this Manual ....... E-5 Power On and Off ............E-5 Clearing the Entry and Memories ........ E-5 Entering and Correcting the Equation ......
Page 52
ERROR AND CALCULATION RANGES Errors ................. E-25 Error Codes and Error Types ........E-25 Calculation Ranges ............ E-25 BATTERY REPLACEMENT Notes on Battery Replacement ........E-28 When to Replace the Batteries ........E-28 Cautions ..............E-28 Replacement Procedure ..........E-29 Automatic Power Off Function ........
♦ Press the RESET switch (on the back), with the tip of a ball- point pen or similar object, only in the following cases. Do not use an object with a breakable or sharp tip. Note that pressing the RESET switch erases all data stored in memory.
• When an abnormal condition occurs and all keys are inoperative. If service should be required on this calculator, use only a SHARP servicing dealer, SHARP approved service facility, or SHARP repair service where available. Hard Case DISPLAY ←Symbol Equation→...
ALPHA : Indicates that K (STAT VAR), O or R has been pressed, and entry (recall) of memory contents and recall of statistics can be performed. FIX/SCI/ENG: Indicates the notation used to display a value and changes by SET UP menu. DEG/RAD/GRAD: Indicates angular units and changes each time G is pressed.
¯ x , sx, σ x, n, Σ x, Σ x , ¯ y , sy, σ y, Σ y, Σ y , Σ xy, r, a, b, c. All variables are cleared. See ‘About the Memory clear key’ for details. This key combination functions the same as the RESET switch.
Multi-line Playback function This calculator is equipped with a function to recall previous equations in the normal mode. Equations also include calcu- lation ending instructions such as “=” and a maximum of 142 characters can be stored in memory. When the memory is full, stored equations are deleted in the order of the oldest first.
INITIAL SET UP Mode Selection Normal mode (NORMAL): m0 Used to perform arithmetic operations and function calcula- tions. Statistics mode (STAT): m1 Used to perform statistical calculations. When executing mode selection, temporary memories, statis- tical variables, statistical data and last answer memory will be cleared even when reselecting the same mode.
[Setting the Floating Point Numbers System in Scientific Notation] The calculator has two settings for displaying a floating point number: NORM1 (default setting) and NORM2. In each dis- play setting, a number is automatically displayed in scientific notation outside a preset range: •...
42 *± 5 + 120 = 42×(–5)+120= –90. (5 ±) ÷ )= 5 E 3 / 4 E –3 (5×10 (4×10 1’250’000. ± 3 = Constant Calculations • In constant calculations, the addend becomes a constant. Subtraction and division are performed in the same man- ner.
Random Function The Random function has four settings for use in the normal or statistics mode. (This function cannot be selected while using the N-Base function.) Press ª to exit. • The generated pseudo-random number series is stored in memory Y. Each random number is based on a number series.
Page 63
[Temporary memories (A-F, X and Y)] Press O and a corresponding variable key to store a value in memory. Press R and a corresponding variable key to recall a value from the memory. To place a variable in an equation, press K, followed by a desired variable key.
110 OY 110. $1= ¥110 26510 /RY= 241. ¥26,510=$? 2750 *RY= 302’500. $2,750=¥? (r → Y) 3 OY r = 3cm πr 28.27433388 24 /( 4 + 6 ) = 2.4...(A) 3 *K?+ 60 / 3×(A)+60÷(A)= 32.2 Chain Calculations • This calculator allows the previous calculation result to be used in the following calculation.
Page 66
Conversion to each system is performed by the following keys: @ê: Converts to the binary system. “ ” appears. @û: Converts to the pental system. “ ” appears. @î: Converts to the octal system. “ ” appears. @ì: Converts to the hexadecimal system. “ ” ap- pears.
3 o 45 - 1.69 = 3h45m – 2 ° 3’36” 1.69h = [60] s 62 o 12 o 24 sin62°12’24” = [10] 0.884635235 Coordinate Conversions • Before performing a calculation, select the angular unit. P (r, θ ) P (x,y ) ↔...
Exponential regression, Logarithmic regression, Power regression, and Inverse regression calculation Statistics of Q and W. In addition, estimate of y for a given x and estimate of x for a given y. (Since the calculator con- verts each formula into a linear regression formula before actual calculation takes place, it obtains all statistics, ex- cept coefficients a and b, from converted data rather than entered data.)
Page 71
DATA 95 k 80 k 75 & 3 k 50 k 75.71428571 σx= 12.37179148 Σx= 530. Σx 41’200. R£ 13.3630621 178.5714286 ( 95 -K~) (95–x) — ×10+50= /K£ * 10 + 50 = 64.43210706 2 & 5 k 12 & 24 k 21 &...
Page 73
[Data Correction] Correction prior to pressing k immediately after a data entry: Delete incorrect data with ª, then enter the correct data. Correction after pressing k: Use [] to display the data previously entered. Press ] to display data items in ascending (oldest first) order.
Statistical Calculation Formulas Type Regression formula Linear y = a + bx Exponential y = a • e Logarithmic y = a + b • ln x Power y = a • x Inverse y = a + b — Quadratic y = a + bx + cx In the statistical calculation formulas, an error will occur when:...
ERROR AND CALCULATION RANGES Errors An error will occur if an operation exceeds the calculation ranges, or if a mathematically illegal operation is attempted. When an error occurs, pressing < (or >) automatically moves the cursor back to the place in the equation where the error occurred.
Page 76
Function Calculation Range DEG: | x | < 10 (tan x : | x | ≠ 90 (2n–1))* π | x | < ––– × 10 sin x, cos x, RAD: π (tan x : | x | ≠ – (2n–1))* tan x | x | <...
Page 77
Function Calculation Range 0 ≤ r ≤ n ≤ 9999999999* —– < 10 (n-r)! 0 ≤ r ≤ n ≤ 9999999999* 0 ≤ r ≤ 69 —– < 10 (n-r)! ↔DEG, D°M’S 0°0’0.00001” ≤ | x | < 10000° x, y → r, θ...
BATTERY REPLACEMENT Notes on Battery Replacement Improper handling of batteries can cause electrolyte leakage or explosion. Be sure to observe the following handling rules: • Replace both batteries at the same time. • Do not mix new and old batteries. •...
Replacement Procedure 1. Turn the power off by pressing @ F. 2. Remove two screws. (Fig. 1) (Fig. 1) (Fig. 2) 3. Slide the battery cover slightly and lift it to remove. 4. Remove the used batteries by prying them out with a ball- point pen or other similar pointed device.