Trigonometric functions in the secondary school
In the school mathematics trigonometric functions for acute angle and obtuse angle are defined differently. The common definitions of trigonometric functions for the both cases in the paper are proposed.
| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Vilnius University Press
2009-12-01
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| Series: | Lietuvos Matematikos Rinkinys |
| Subjects: | |
| Online Access: | https://www.journals.vu.lt/LMR/article/view/17915 |
| _version_ | 1811331406396129280 |
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| author | Petras Vaškas |
| author_facet | Petras Vaškas |
| author_sort | Petras Vaškas |
| collection | DOAJ |
| description | In the school mathematics trigonometric functions for acute angle and obtuse angle are defined differently. The common definitions of trigonometric functions for the both cases in the paper are proposed. |
| first_indexed | 2024-04-13T16:19:02Z |
| format | Article |
| id | doaj.art-948b27616660407bb6f4eac176c366e6 |
| institution | Directory Open Access Journal |
| issn | 0132-2818 2335-898X |
| language | English |
| last_indexed | 2024-04-13T16:19:02Z |
| publishDate | 2009-12-01 |
| publisher | Vilnius University Press |
| record_format | Article |
| series | Lietuvos Matematikos Rinkinys |
| spelling | doaj.art-948b27616660407bb6f4eac176c366e62022-12-22T02:39:58ZengVilnius University PressLietuvos Matematikos Rinkinys0132-28182335-898X2009-12-0150proc. LMS10.15388/LMR.2009.23Trigonometric functions in the secondary schoolPetras Vaškas 0Vilniaus universitetasIn the school mathematics trigonometric functions for acute angle and obtuse angle are defined differently. The common definitions of trigonometric functions for the both cases in the paper are proposed.https://www.journals.vu.lt/LMR/article/view/17915area of a trianglecosine of the anglePythagorean theoremreduction formulassine of the angletheorem of cosines |
| spellingShingle | Petras Vaškas Trigonometric functions in the secondary school Lietuvos Matematikos Rinkinys area of a triangle cosine of the angle Pythagorean theorem reduction formulas sine of the angle theorem of cosines |
| title | Trigonometric functions in the secondary school |
| title_full | Trigonometric functions in the secondary school |
| title_fullStr | Trigonometric functions in the secondary school |
| title_full_unstemmed | Trigonometric functions in the secondary school |
| title_short | Trigonometric functions in the secondary school |
| title_sort | trigonometric functions in the secondary school |
| topic | area of a triangle cosine of the angle Pythagorean theorem reduction formulas sine of the angle theorem of cosines |
| url | https://www.journals.vu.lt/LMR/article/view/17915 |
| work_keys_str_mv | AT petrasvaskas trigonometricfunctionsinthesecondaryschool |