1
Right Triangle Basics
Name sides relative to a selected acute angle
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Introduction to Trigonometry
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2
Trigonometric Ratios
Use side ratios in a right-angled triangle
3
Trigonometric Ratios
Use reciprocal trigonometric ratios correctly
4
Well-defined Ratios
Use similar triangles to justify ratio consistency
5
Ratio Evaluation
Calculate all trigonometric ratios for a given right triangle
6
Ratio Evaluation
Use a given ratio and one side to determine other sides
7
Standard Angles
Use exact trigonometric values of standard angles
8
Boundary Angles
Evaluate trigonometric ratios where defined at boundary angles
9
Trigonometric Expressions
Simplify numerical trigonometric expressions
10
Complementary Angles
Apply sin(90° - A)=cos A and related identities
11
Ratio Relationships
Use cosec A = 1/sin A, sec A = 1/cos A and cot A = 1/tan A
12
Applications
Use trigonometric ratios to find unknown sides and angles in simple cases
13
Error Analysis
Catch incorrect opposite/adjacent choices
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