Geometrische aufgabensammlung. Ausgabe A: für gymnasien ... von Dr. W. Lietzmann.
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~ 31. Tae alfgemeine eDreied 199 28. o3erecne ben Snt)at ber folgenben Zreiecfe: a) a -12cm, b =15cm, = 600; b) b =, c = -/3. n, a =30~; c) a 725,5m, c 288,3 m, = 113~ 36'; d) a =10c, =- 135, = 300; e) b = 77,31 m, = 73,4~, Y = 78,7~; f) c 100 m, = 85,34~, = 79,81~. 29. O3eftimme ben:ßroportionafitäatfattor in a: b c = sin a: sin 3: sin y bnrc) fofgenbe ftÜerIegung. 3eitne ben Umfreit bee (a) ipitvointlig, b) ftumpf[ tinltig angenommenen) ZreieCd. aäfe tom Msittefpunnt auf bie 2eite a bie eentrec4te unb beige, baf. a 2r sina anb ebenjo II. b 2 r * sin, III. e = 2 r sin y ift. c) enttoicUe mit tilfe ber eben gefunbenen:ormeln einen neuenn 3ewrei bee ~inntfcrae~. ie übrigen ttutnhftintn ft: punmpfe ütinhtI. 3ßr Qiaftnno. 30. iüt1re bie Überlegungen, bie anm t3eoeit be Lofiinuttfabe gefi4trt )aben (2tnfg. 6 unb 7), fiür ben gaf bunrc, Dbaf ber in ber gormel anftretenbe Sintef ftntmp ift. 3eige, ba~ bann cos (180o~- ) auftritt, nnb ba~ ber Lofinnfaei treiter gilt, ivenn man cos =-cos (180~ - ) befiniert. 31. caffe bie eefinitionegleitcnng bee ofintu fihr ftumpfe SteinFe in 3Sorte. 32. 'ib auf 3:rnnb ber Zefinition~tgeicuung folgenbe Werte an (bon e) an mit iitfe ber Safet): a) cos 135~; b) cos 120~; c) cos 150~; d) cos 180~; e) cos 108~; f) cos 162~; g) cos 177~; h) cos 122,7~; i) cos 95,2~; k) cos 101 ~ 36'; 1) cos 1250 54'; m) cos 1790 43'. 33. 2ete bie graptifce Zarfteunng ber (ofinnfutnntion fiür ftnmpfe S3infef fort, inbem bu babei bie foi nutuntre füii pite S3intet benutft. 34. 3erice temmetrtieer:fätniffe seigt bie (oSoinunfnrte im 3ereidc bon 0~ bit 180~? 35. 65ib ben SVinfeI c an, für ben cos a it: a) -; b)0; c) - 2; d)-; e) - /3; f) 3
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About this Item
- Title
- Geometrische aufgabensammlung. Ausgabe A: für gymnasien ... von Dr. W. Lietzmann.
- Author
- Lietzmann, Walther, 1880-1959.
- Canvas
- Page 189
- Publication
- Leipzig [etc.]: B. G. Teubner,
- 1916-20.
- Subject terms
- Geometry -- Problems, exercises, etc.
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"Geometrische aufgabensammlung. Ausgabe A: für gymnasien ... von Dr. W. Lietzmann." In the digital collection University of Michigan Historical Math Collection. https://name.umdl.umich.edu/acv4752.0001.001. University of Michigan Library Digital Collections. Accessed May 2, 2025.