# Tangents Teacher Resources

Find Tangents lesson plans and worksheets
Showing 1 - 24 of 618 resources
EngageNY

#### EngageNY Geometry Module 5: Circles With and Without Coordinates

For Teachers 9th - 12th Standards
A comprehensive 21-lesson math unit challenges high schoolers to wrap their heads around the geometry of circles. Building on a prior understanding of similarity and congruence, length and area, and the properties of geometric figures,...
EngageNY

#### EngageNY Algebra II Module 2: Trigonometric Functions

For Teachers 10th - 12th Standards
Building on young mathematicians prior knowledge of geometry and algebraic functions, this 17-lesson unit introduces the topic of trigonometric ratios. Starting with the basic definitions of sine, cosine, and tangent, students move on to...
8 Items in Collection
Lesson Planet

#### Graphing Trig Functions

For Teachers 9th - 12th Standards
Going from simple trig functions to their graphs can seem like a daunting task. These resources show the steps to connect evaluating the functions to graphing them. The collection has a variety of resource types for you to explore.
Lesson Planet

#### Sine, Cosine, and Tangent Ratios

For Students 11th
In this ratios activity, 11th graders solve and complete 8 various types of problems. First, they read each problems and draw a sketch for each. Then, students write a trigonometric ratio for each problem and round any decimal answers to...
Lesson Planet

#### Connecting Unit Circle and Sine/Cosine Curves

For Teachers 9th - 11th
Students apply the properties of trigonometric ratios to solve problems. In this calculus lesson plan, students apply the ratios of sine, cosine and tangent as they solve problems with vectors.
EngageNY

#### The Definition of Sine, Cosine, and Tangent

For Students 9th - 10th Standards
Introduce your classes to a new world of mathematics. Pupils learn to call trigonometric ratios by their given names: sine, cosine, and tangent. They find ratios and use known ratios to discover missing sides of similar triangles.
Lesson Planet

#### Ratios of Right Triangles

For Teachers 9th - 12th
Learners find the angle measures of a right triangle given two side lengths.  In this finding the angle measures of a right triangle given two side lengths lesson, students record the ratio of a leg and hypotenuse of a right triangle. ...
1 In 1 Collection
EngageNY

#### Properties of Tangents

For Teachers 9th - 12th Standards
You know about the tangent function, but what are tangent lines to a circle? Learners investigate properties of tangents through constructions. They determine that tangents are perpendicular to the radius at the point of tangency, and...
1 In 1 Collection
EngageNY

#### Why Call It Tangent?

For Students 10th - 12th Standards
Discover the relationship between tangent lines and the tangent function. Class members develop the idea of the tangent function using the unit circle. They create tables of values and explore the domain, range, and end behavior of the...
Lesson Planet

#### Sine, Cosine, and Tangent Practice

For Students 10th - 12th Standards
Your learners will get plenty of practice finding the sine, cosine, and tangent values and angles in this well-organized worksheet. Given right triangles with their various side lengths and angles labeled, learners find the sine, cosine,...
3:10
Lesson Planet

#### Tangent Lines: Lesson

For Students 8th - 11th Standards
Point out properties of a line tangent to a circle. The resource provides two theorems dealing with tangent lines to a circle. A section of a geometry playlist uses the relationship between a radius and a tangent line to find missing...
Lesson Planet

#### When is Tangent, tangent?

For Teachers 9th - 12th
High schoolers study the concept of tangent of a unit circle. In this unit circle instructional activity, students explore the mathematical history of the trigonometric ration, tangent, through an interactive date-gathering construction...
Lesson Planet

#### Sine, Cosine, Tangent

For Students 10th - 12th
In this sine, cosine, tangent learning exercise, students read short statements, draw illustrations of the statement and then use trigonometric ratios to determine the length of the missing side or measurement of an angle. This five-page...
Lesson Planet

#### Tangent to a Circle From a Point

For Teachers 9th - 10th Standards
Learners see application of construction techniques in a short but sophisticated problem. Combining the properties of inscribed triangles with tangent lines and radii makes a nice bridge between units, a way of using information about...
EngageNY

#### Special Triangles and the Unit Circle

For Teachers 11th - 12th Standards
Calculate exact trigonometric values using the angles of special right triangles. Beginning with a review of the unit circle and trigonometric functions, class members use their knowledge of special right triangles to find the value of...
Lesson Planet

#### Tangent Lines and the Radius of a Circle

For Teachers 9th - 12th Standards
Your Geometry learners will collaboratively prove that the tangent line of a circle is perpendicular to the radius of the circle. A deliberately sparse introduction allows for a variety of approaches to find a solution.
Lesson Planet

#### Using a Calculator (Sine, Cosine, Tangent)

For Students 10th - 11th
In this calculator worksheet, learners use a calculator to solve given trigonometric ratios. They determine the sine, cosine and tangent of expressions. This one-page worksheet contains ten problems.
EngageNY

#### Sine and Cosine of Complementary Angles and Special Angles

For Students 9th - 10th Standards
Building trigonometric basics here will last a mathematical lifetime. Learners expand on the previous lesson in a 36-part series by examining relationships between the sine and cosine of complementary angles. They also review the ratios...
Lesson Planet

#### Unit Circle: Special Angles—Just Know One

For Students 9th - 12th Standards
It's all about the patterns! Young scholars learn that the unit circle repeats itself in all four quadrants. Using these patterns, they evaluate the sine, cosine, and tangent of special angles.
Lesson Planet

#### Trigonometric Functions: The Unit Circle

For Teachers 10th - 12th Standards
This comprehensive problem and note set walks the class through a large part of simplifying trigonometric expressions using the unit circle and identities. From identifying angles to applying appropriate trigonometric ratios, problems...
1 In 1 Collection
EngageNY

#### Graphing the Tangent Function

For Students 10th - 12th Standards
Help learners discover the unique characteristics of the tangent function. Working in teams, pupils create tables of values for different intervals of the tangent function. Through teamwork, they discover the periodicity, frequency, and...
3:01
Lesson Planet

#### What is a Tangent Line to a Circle?

For Teachers 9th - 11th
This video defines what it means for a line to be tangent to a circle. It also defines the term point of tangency and shows how the radius drawn to the point of tangency is perpendicular to the tangent line.
6:52
Lesson Planet

#### Intersecting Tangent and Secant Lines of Circles

For Students 9th - 12th Standards
Interpret and apply the relationships between tangent and secant lines. The instructor explains the relationships of the angles and segments created by intersecting tangent and secant lines.
3:09
Lesson Planet

#### Angles On and Inside a Circle: Lesson

For Students 9th - 11th Standards
A video introduces methods to find the measure of angles whose vertex is on and inside a circle. Within examples, the section of a larger playlist on basic geometry incorporates several angle measurement theorems.