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Peer reviewed

ERIC Number: EJ440167

Record Type: Journal

Publication Date: 1992

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0025-5769

EISSN: N/A

Available Date: N/A

Sharing Teaching Ideas.

Mathematics Teacher, v85 n3 p198-200 Mar 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), Geometry, Mathematical Enrichment, Mathematics Education, Mathematics Instruction, Secondary Education, Secondary School Mathematics, Triangles (Geometry), Trigonometry

Publication Type: Journal Articles; Collected Works - Serials; Guides - Classroom - Teacher

Education Level: N/A

Audience: Teachers; Practitioners

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A

Author Affiliations: N/A