Cosine Conquest

Worksheet Description

This worksheet introduces students to the Law of Cosines, a fundamental theorem in trigonometry. It includes a variety of problems involving different types of triangles, where students must use the law to calculate unknown sides or angles. The worksheet provides clear illustrations of triangles with given side lengths and angles, which students need to analyze to apply the formula. Each problem requires rounding the answers to the nearest tenth, adding an element of precision to the task. Overall, the worksheet is designed to strengthen students’ understanding of the relationship between the sides and angles of triangles using trigonometry.

The worksheet aims to teach students how to effectively use the Law of Cosines in solving problems related to triangles. By working through various problems, students practice identifying when to apply the Law of Cosines versus other trigonometric rules. The worksheet emphasizes the practical application of this law, helping students to calculate unknown lengths and angles in non-right triangles. Through these exercises, students also reinforce their skills in rounding numbers to the nearest tenth, which is crucial for achieving accurate results. The ultimate goal is for students to confidently apply this law to real-world problems involving triangles.