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Choosing the Correct Trig Rule WORKSHEET

Suitable for Grades: Geometry, IM 2
CCSS: HSG.SRT.C.6, HSG.SRT.D.11
CCSS Description: Understand that by similarity, side ratios in right triangles are properties of the angles in the triangle, leading to definitions of trigonometric ratios for acute angles

(+) Understand and apply the Law of Sines and the Law of Cosines to find unknown measurements in right and non-right triangles (e.g., surveying problems, resultant forces).

Choosing the Correct Trig Rule WORKSHEET DESCRIPTION

This worksheet is perfect to consolidate the skills of using the sine and cosine rules and can later be used as a guide for future questions. Learners are presented with 6 triangles with ticks and question marks, providing what information has been given and what is required. There are also 6 methods provided that need to be matched to the diagrams using a line. Learners will need to think about what steps are required to find the missing value based on the information provided.