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Peer reviewedMathematics Teacher, 1992
Two trigonometry problems are presented. The first compares the graphs of the functions arcsin[sin(x)], arccos[cos(x)], and the identity function f(x)=x. The second, using the law of cosines, demonstrates that the solution of a triangle knowing two sides and the excluded angle is no longer ambiguous. (MDH)
Descriptors: Calculators, Computer Assisted Instruction, Enrichment Activities, Functions (Mathematics)
Download full textSuydam, Marilyn N., Ed.; Kasten, Margaret L., Ed. – Investigations in Mathematics Education, 1987
This issue contains abstracts and critical comments for published reports of research in mathematics education. The reports are concerned with: (1) relationships between class size, teaching practices, and student achievement; (2) sex differences related to attitudes; (3) comprehension of mathematical relationships expressed in graphs; (4) effect…
Descriptors: Addition, Attitudes, Cognitive Processes, Computer Assisted Instruction
