Law of Sines Teacher Resources

Find Law of Sines lesson plans and worksheets
Showing 1 - 24 of 105 resources
EngageNY

EngageNY Geometry Module 2: Similarity, Proof, and Trigonometry

For Teachers 9th - 12th Standards
The Geometry Module 2: Similarity, Proof, and Trigonometry collection includes 36 lessons that are divided into five topics: Scale Drawings, Dilations, Similarity and Dilations, Applying Similarity to Right Triangles, and Trigonometry....
EngageNY

EngageNY Precalculus and Advanced Topics Curriculum

For Teachers 11th - 12th Standards
A 5-module complete precalculus course begins with young mathematicians exploring linearity, complex number operations as transformation, and the power of the right notation. Module 2 has pupils examining incidence relationships in...
EngageNY

EngageNY Precalculus and Advanced Topics Module 4: Trigonometry

For Teachers 11th - 12th Standards
Introduce advanced math students to the power of trigonometry! The 14 lessons in the Module 4 collection are divided into three topics: Trigonometric Functions, Trigonometry and Triangles, and Inverse Trigonometric Functions. Each lesson...
6:34
Lesson Planet

Proof: Law of Sines

For Students 11th - Higher Ed
In this video, Sal proves the Law of Sines by using the SOH-CAH-TOA model and setting up equivalent ratios.
Lesson Planet

Law of Sines—Law of Sines and Law of Cosines

For Teachers 10th - 12th Standards
It's important to abide by the law. A thought-provoking instructional activity helps learners derive the Law of Sines. They then apply the Law of Sines to find unknown measures. 
Lesson Planet

Applying Laws of Sines and Cosines

For Teachers 9th - 11th Standards
How does the Law of Sines differ from the Law of Cosines? Learners, working cooperatively in small groups, try to gain insight into this question. The activities center around using both laws in different scenarios including real-world...
Lesson Planet

Deriving and Applying the Law of Sines

For Teachers 9th - 12th Standards
Breaking the law isn't possible when talking about the Law of Sines. Individuals learn to apply the Law of Sines to solve problems involving triangles. They also learn to derive the Law of Sines.
Lesson Planet

Law of Sines

For Teachers 10th - 12th Standards
One must obey the sine laws. A lesson plan introduces and derives the Law of Sines for non-right triangles. With examples that use the Law of Sines to determine unknown measures in triangles, the lesson plan checks to see if the Law of...
Lesson Planet

Law of Sines

For Teachers 9th - 12th Standards
Laws are meant to be broken, right? Learners derive the Law of Sines by dropping a perpendicular from one vertex to its opposite side. Using the Law of Sines, mathematicians solve for various parts of triangles.
5:57
Lesson Planet

What is the Law of Sines?

For Teachers 10th - 11th
The Law of Sines is derived in this video by using formula for the area of a triangle that multiplies _ times two adjacent sides and the sine of their included angle.
Lesson Planet

The Law of Sines and the Law of Cosines

For Teachers Higher Ed
In this college level trigonometry worksheet, students apply the Law of Sines and the Law of Cosines to solve triangles. The four page worksheet contains forty-four problems. Solutions are not provided. 
Lesson Planet

Law of Sines

For Teachers 10th - 12th
In this Law of Sines worksheet, students describe, in their own words, when to use the law of sines. They give an example of a problem using the law of sines. This two-page worksheet contains one problem and a sample answer.
1 In 1 Collection
EngageNY

Applying the Laws of Sines and Cosines

For Students 9th - 10th Standards
Breaking the law in math doesn't get you jail time, but it does get you a wrong answer! After developing the Law of Sines and Cosines in lesson 33 of 36, the resource asks learners to apply the laws to different situations. Pupils must...
Lesson Planet

Following the Law of Sine

For Teachers 9th - 12th Standards
Laws were not meant to be broken. Learners apply the Law of Sines to solve triangles. After doing some practice problems, they solve a real-world problem involving a city planning project.
2 In 2 Collections
EngageNY

Law of Sines

For Teachers 11th - 12th Standards
Prove the Law of Sines two ways. The ninth segment in a series of 16 introduces the Law of Sines to help the class find lengths of sides in oblique triangles. Pupils develop a proof of the Law of Sines by drawing an altitude and a second...
2 In 2 Collections
EngageNY

Putting the Law of Cosines and the Law of Sines to Use

For Teachers 11th - 12th Standards
Use the Law of Cosines and the Law of Sines to solve problems using the sums of vectors. Pupils work on several different types of real-world problems that can be modeled using triangles with three known measurements. In the process,...
1 In 1 Collection
Lesson Planet

Applying Laws of Sines and Cosines

For Students 9th - 12th Standards
This worksheet provides excellent practice in applying the Law of Sines and the Law of Cosines. It consists of six problems, each of which presents a real-world scenario with an accompanying diagram. The task in each exercise is to...
Lesson Planet

Introduction to Law of Sines

For Teachers 10th - 12th
Students solve problems using the law of sines.  For this sines lesson, students work in groups and individually to solve problems using the law of sines.  They identify real life problems that require the use of the law of sines.  Real...
Lesson Planet

Exploring the Laws of Sines and Cosines

For Teachers 10th - 11th
This lesson uses GeoGebra on the Web, or Geometer's Sketchpad to investigate and identify the different properties of sines and cosines. The class learns how the laws of sine and cosine relates to a right triangle and a non-right...
Lesson Planet

Law of Sines

For Students 10th
In this Law of sines instructional activity, 10th graders solve 10 different sets of problems related to the Law of Sine and Ambiguous case. First, they determine the ratio of the sides of the triangle with the given measurements. Then,...
Lesson Planet

Algebra 2 & Trigonometry Practice: Law of Sines

For Teachers 9th - 12th
In this law of sines worksheet, students solve 9 multiple choice and short answer problems.  Students use the law of sines to missing side lengths and angles of triangles.
Lesson Planet

Angle-Side-Angle Triangles: Caution Tape

For Students 10th - 12th Standards
Don't lose your marbles. Scholars use an interactive to create a triangle that closes off a portion of a sidewalk with loose marbles. The Law of Sines helps them find the side measures of such a triangle.
Lesson Planet

Triangle Area: No Height? Use the Sine

For Students 9th - 12th Standards
No height? No problem! Learners use their knowledge and a little help from GeoGebra to develop the Law of Sines formula. The Law of Sines helps to determine the height of triangles to calculate the area.
1 In 1 Collection
EngageNY

Using Trigonometry to Find Side Lengths of an Acute Triangle

For Students 9th - 10th Standards
Not all triangles are right! Pupils learn to tackle non-right triangles using the Law of Sines and Law of Cosines. After using the two laws, they then apply them to word problems. 

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Law of Sines