Ohio Resource Center
 Trigonometry for Solving ProblemsORC# 1111Resource InformationResource Type: Content Supports -- Activities and rich problemsDiscipline: MathematicsGrades: Grades 10–12Professional Commentary: These activities can enhance students' appreciation for trigonometry as a tool in problem solving. Students should be familiar with trigonometric functions and their values for special angles....MORE...
 NAEP Assessment Item, Grade 12: Find the Length of a Segment in a TriangleORC# 1996Resource InformationResource Type: AssessmentsDiscipline: MathematicsGrades: Grades 7–12Professional Commentary: This multi-step problem asks students to find the length of a line segment using similar triangles and simple trigonometry. This multiple-choice question is a sample test item used in grade 12 in the 1992 National Assessment of Educational Progress (see About NAEP)....MORE...
 NAEP Assessment Item, Grade 12: Apply Trigonometry in Pyramid to Find AngleORC# 2021Resource InformationResource Type: AssessmentsDiscipline: MathematicsGrades: Grades 8–12Professional Commentary: Students are asked to find a specified angle in a regular hexagonal pyramid using trigonometry. They have the option of using a calculator....MORE...
 NAEP Assessment Item, Grade 12: Express Trigonometric FunctionORC# 2042Resource InformationResource Type: AssessmentsDiscipline: MathematicsGrades: Grades 7–10Professional Commentary: Students must find the cosine of an acute angle of a right triangle, given the lengths of the legs of the triangle. This multiple-choice question is a sample test item used in grade 12 in the 1992 National Assessment of Educational Progress (see About NAEP)....MORE...
 NAEP Assessment Item, Grade 12: Find the Length of the Side of a TriangleORC# 2088Resource InformationResource Type: AssessmentsDiscipline: MathematicsGrades: Grades 8–12Professional Commentary: Students must use the sine function to find the length of a side of a right triangle. They have the option of using a calculator....MORE...
 ODE Assessment Item, Grade 10: Use Trigonometry to Find Height of TreeORC# 5401Resource InformationResource Type: AssessmentsDiscipline: MathematicsGrades: Grade 10Professional Commentary: Students are asked to find the height of a tree using trigonometry. This multiple-choice question is a sample item used in the 2005 Ohio Graduation Test (see Overview of Ohio's Assessment System)....MORE...
 Law of Sines and Law of Cosines 2: Law of CosinesORC# 7725Resource InformationResource Type: LessonsDiscipline: MathematicsGrades: Grades 9–12Professional Commentary: Students use right triangle trigonometry and the Pythagorean theorem to develop the law of cosines. An activity sheet, discussion questions, lesson extensions, and suggestions for assessment are included....MORE...
 Law of Sines and Law of Cosines 1: Law of SinesORC# 7726Resource InformationResource Type: LessonsDiscipline: MathematicsGrades: Grades 9–12Professional Commentary: Students use right triangle trigonometry to develop the law of sines. An activity sheet, discussion questions, lesson extensions, and suggestions for assessment are included....MORE...
 Sine Law by Discovery: Direct Variation and TrianglesORC# 10176Resource InformationResource Type: Content Supports -- Activities and rich problemsDiscipline: MathematicsGrades: Grades 10–12Professional Commentary: Through guided discovery, students revisit the notion of two quantities x, y being directly proportional if they are related by a constant ratio y/x = k. This concept is reviewed through applications that confirm that a graph of directly varying quantities satisfies the form y = kx....MORE...