Lesson: Applications on Sine and Cosine Laws Mathematics • Second Year of Secondary School

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In this lesson, we will learn how to use the laws of sines and cosines to solve real-world problems.

Students will be able to

draw a diagram to represent a real-world problem and establish whether it can be solved by using the law of sines, the law of cosines, or a combination of both,
solve real-world problems using the law of sines, the law of cosines, or a combination of both, including finding unknown lengths and angle measures,
solve problems described using directions (north, east, south, and west) and problems given in a wider geometric context (including problems involving circles); this also includes finding areas of triangles or parallelograms.