Top 10k strings from O'Level Maths Revision - Trigonometry 2 (1983)(Rose Software)[a].z80 in <root> / bin / z80 / software / Sinclair Spectrum Collection TOSEC.exe / Sinclair ZX Spectrum - Utilities & Educational / Sinclair ZX Spectrum - Utilities & Educational - [Z80] (TOSEC-v2007-01-01) /
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4 ;z$;z$;z$;z$;
3 ;"Your answer:";q$:
2 p$=p$+(" (Value of
2 p$=" What is the length of CB?":
2 ;z$;z$;z$;
2 ;"(in a vertical plane)":
2 -2bc COS A":
2 )+(")*180/
1 q$=a$+".0"
1 q$(j)>"9")
1 q$(i)="/")
1 q$(i)=")")
1 q$(f)=")")
1 q$(f)="("):
1 p$=p$+(" PZ="+
1 p$=p$+(" AO="+
1 p$="Lat="+
1 p$="Angle of AM to the ground(
1 p$=" Lat="+
1 p$=" Angle between plane BCP and
1 p$=" Angle between PA and plane ABCD =?"
1 p$=" Angle of AM to the ground? ":
1 n$=o$+" ":
1 m$=o$+" ":
1 f)+"("+q$(f+1
1 br2=br2+(1
1 br1=br1+(1
1 b;" Press any key "
1 W. Arc NY=?"
1 RSN ",z$,z$:
1 ROSE SOFTWARE 1983
1 OPC = PC/6370";
1 N., longitude ";lo;"
1 N. What is the distance";
1 N. Long="+
1 N. Diff.in Long="+
1 C=180-";A1;"-";B1;"=";180
1 BCD to find BD":
1 AMR=";a$;"
1 ACM=";C1;"
1 ACM first"
1 ABD = ";a$;" sq.m";
1 A is SIN A X SIN A":
1 =AM/";AB;" So AM=";AM;"cm":
1 =1abSIN C in
1 = ";DC;"/SIN";B1;"
1 ;z$;z$;z$;z$;z$;
1 ;z$;z$;z$;z$
1 ;AR;"cm(AR)":
1 ;AM;"cm(AM)":
1 ;("the nearest whole no.(omit km)"
1 ;("Need help? Press h")
1 ;("1 decimal place"
1 ;("(omit sq.m)"
1 ;("(omit cm)"
1 ;"which subtends an angle of 1'";
1 ;"view seen from directly above":
1 ;"vertical rod AR. M is the";
1 ;"triangles,use SINE RULE:-";
1 ;"through the N and S poles":
1 ;"the planes is
1 ;"the plane ABCD at S":
1 ;"subtends an angle 360
1 ;"seen from the end";
1 ;"rectangle":
1 ;"perpendicular to AB through P"
1 ;"parallel to the equator"
1 ;"or use COSINE RULE:-";
1 ;"on the earth (eg:the equator)";
1 ;"of the arc AB of a great circle";
1 ;"midpoint of CB.
1 ;"made from four lengths of wood";
1 ;"latitude ";la;"
1 ;"is the view seen from the front";
1 ;"is a small circle";
1 ;"half of a great circle passing";
1 ;"graph of:-";
1 ;"cuboid is another rectangle ";
1 ;"cm. AM=";AM;"cm.":
1 ;"by an arc AB of length";
1 ;"between them along the line of latitude if the difference in longitudes is ";lo;"
1 ;"base ABCD where AB=";AB;"cm.BC=";BC;"cm";
1 ;"at the centre"
1 ;"at the centre of the earth.";
1 ;"at an angle to the ground by a";
1 ;"and PA=PB=PC=PD=";PC;"cm.";
1 ;"a = b = c";
1 ;"Your answer:":
1 ;"Your answer ";q$:
1 ;"You can use SIN,ATN,etc,+,-,*,/ "
1 ;"Use area of
1 ;"Use a/SIN A = b/SIN B in
1 ;"Use SINE rule in
1 ;"Use SINE RULE: a/SIN A = c/SIN C":
1 ;"Use COS rule in
1 ;"Use COS RULE: a
1 ;"Trigonometry":
1 ;"To solve non-right-angled";
1 ;"To find the latitude of point B draw the great circle through B";
1 ;"Through";
1 ;"This pyramid has a rectangular";
1 ;"This object is a:-";
1 ;"This is the";
1 ;"The whole circumference (2
1 ;"The plan of this cuboid is a";
1 ;"The line RS meets";
1 ;"The diagram shows a roof truss";
1 ;"The angle between";
1 ;"The PLAN of an object is the";
1 ;"The FRONT ELEVATION of an object";
1 ;"THE NAUTICAL MILE":
1 ;"TAN x= 0
1 ;"So use ACS(";AC/2
1 ;"So use ACS(";AB/2
1 ;"So length arc NY =(";90
1 ;"So by comparison,";
1 ;"So PZO=";(
1 ;"So PC=";r;"km":
1 ;"So PAO=";(
1 ;"So CB = ";a$;
1 ;"So BD/SIN";C1;"
1 ;"SIN x= 0 1 ";
1 ;"SIN AMR=AR/AM=";AR;"/";AM;
1 ;"SIN A SIN B SIN C"
1 ;"SIN ";A1;"
1 ;"Radius";
1 ;"REVISION EXERCISE":
1 ;"REMEMBER ALSO:-";
1 ;"Press h";
1 ;"Press 1 to 4"
1 ;"Press 1 to 3"
1 ;"Press 1 or 2"
1 ;"Point B has longitude 60
1 ;"PZ=";PZ;"cm.(Pythagoras)":
1 ;"P and Q lie on line of latitude ";la;"
1 ;"On each plane draw a line
1 ;"Note that SIN
1 ;"Need help?";
1 ;"NS is half a great circle":
1 ;"More? y or n":
1 ;"Lines of longitude are measured in degrees East or West of the prime meridian through Greenwich";
1 ;"LONGITUDE"
1 ;"LENGTH OF ARC":
1 ;"LATITUDE"
1 ;"Key in your answer to";
1 ;"Invalid. Try again":
1 ;"In order to find the angle"," between the line and the"," plane,drop the perpendicular"," RN from R onto the plane"
1 ;"IDENTITIES AND FORMULAE"
1 ;"How far is the yacht from the North Pole measured along the meridian?"
1 ;"Greenwich"
1 ;"Giving area
1 ;"Giving CB = ";
1 ;"Giving CB
1 ;"Giving BD=";a$;"cm":
1 ;"Giving BD = ";BD;"m":
1 ;"Find length of AM first"
1 ;"FRONT ELEVATION";
1 ;"EXERCISE";
1 ;"ELEVATION(any)":
1 ;"Draw the great circle through Y";
1 ;"Draw the great circle through P and find radius PC(of latitude)";
1 ;"Correct ans:";s:
1 ;"Correct ans ";a$:
1 ;"Choose any point P on the line";
1 ;"COS x= 1 0 ";
1 ;"COS PZO=OZ/PZ=";AB/2
1 ;"COS PZO=";AB/2
1 ;"COS PAO=AO/AP=";AC/2
1 ;"COS PAO=";AC/2
1 ;"COS ";la;"
1 ;"CD=BE=";BE;"cm. CM=MB=";BC/2
1 ;"CB/SIN ";A1;"
1 ;"BD straight across it":
1 ;"B lies on the line of latitude";
1 ;"Area of triangle ABC =";
1 ;"Arc PQ = ";lo;"/360 X 2
1 ;"Arc NY =";
1 ;"AO=AC/2=";AC/2
1 ;"ANGLE BETWEEN A LINE AND A PLANE"
1 ;"ABC is a thin board supported";
1 ;"AB,AC,CE and BD";
1 ;"AB where the two planes meet";
1 ;"A yacht Y is in";
1 ;"A parallel of latitude";
1 ;"A nautical mile is the length";
1 ;"A meridian of LONGITUDE is";
1 ;"A great circle has its centre";
1 ;"A field ABCD has a footpath";
1 ;"=6370 km";
1 ;"= ";lo;"/360 X 2X
1 ;"= ";a$;"km";
1 ;"6. Typical 'O' level questions";
1 ;"5. Identities and formulae";
1 ;"4. cylinder";
1 ;"4. Latitude and longitude"
1 ;"3. pyramid";
1 ;"3. Three-dimensional problems";
1 ;"2. cone";
1 ;"2. Plan and elevation";
1 ;"2. False";
1 ;"1abSIN C = 1x";AB;"x";BD;"xSIN";B2;"
1 ;"1. sphere";
1 ;"1. True";
1 ;"1. Graphs of SIN,COS,TAN";
1 ;"1 ab SIN C";
1 ;"/";PZ;")":
1 ;"/";PC;")":
1 ;"(1 minute or 1/60 of a degree)"
1 ;" y or n "
1 ;" Well done "
1 ;" Total incorrect ";v;" ":
1 ;" The angle between the line"," and the plane is
1 ;" The END ELEVATION is the view";
1 ;" TAN ACM=";AM;"/";BC/2
1 ;" So far ";
1 ;" SIN";Q;"
1 ;" Press 1 to 6 ";
1 ;" Like to see why? "
1 ;" Correct ans:";s+1
1 ;" Use computer as a calculator? ";
1 ;" Total correct ";u;" ";
1 ;" THE ANGLE BETWEEN TWO PLANES "
1 ;" END ELEVATION"
1 ;" Stop tape & press any key ":
1 ;" x= 0
1 1/2*120*204.26*
1 -la;"/360)X(2
1 -la;"/360 X 2 X
1 -2x";b1;"x";c1;"xCOS";A1;"
1 -2x";BC;"x";BE;"xCOS";C1;"
1 -2bcCOS A";
1 ,n;" Press any key ":
1 )+q$(i+(br=1
1 (q$(j)<"0"
1 (q$(i)="("
1 (b1*b1+c1*c1-2
1 (BC*BC+BE*BE-2
1 "4");(" (omit
1 plane ABCD =?"
1 is subtended";
1 X 6370 = ";a$;"km";
1 X ";c1;"/SIN ";180
1 Rose Software "
1 Length of BD=?":
1 Area of triangle ABD=?":
1 = ";c1;"/SIN ";180
1 = ";b1*b1;"+";c1*c1;"-";(
1 Angle of AM to the ground? W