# Trigonometric Ratio Teacher Resources

Find Trigonometric Ratio lesson plans and worksheets

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Lesson Planet

#### Worksheet 6.6 Analysis: Trig Ratios

In this trig ratios worksheet, students determine the exact value of given expressions. This one-page worksheet contains 12 multi-step problems.

Lesson Planet

#### Trig Ratios of General Angles

In this trig ratios activity, learners determine the angle measurement of trigonometric ratios. They find the value of trigonometric function. This approximately four-page activity contains 24 problems. Answers are provided on the last...

Lesson Planet

#### How Do You Find the Cosine of an Angle in a Right Triangle?

What's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find cosine(A) in the given right triangle. Use the ratio of the adjacent side divided by the hypotenuse to find cos(A). The instructor...

Lesson Planet

#### How Do You Find the Tangent of an Angle in a Right Triangle?

What's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find tangent(A) in the given right triangle. Use the ratio of the opposite side divided by the adjacent side to find tan(A). The...

Lesson Planet

#### How Do You Find a Missing Side of a Right Triangle Using Sine?

What's a trigonometric ratio? It is a ratio between two sides of a right triangle. In this problem, find sin(A) in the given right triangle. Use the ratio of the opposite side divided by the hypotenuse to find sin(A). The instructor...

Lesson Planet

#### Basic Trigonometric Ratios

In this trigonometric ratio worksheet, students determine the length of a side of a right triangle, or the measurement of angles using trigonometric ratios. This one-page worksheet contains 24 problems. Answers are provided at the bottom...

Lesson Planet

#### Similar Right Triangles and Trig Ratios

Is it possible to be the same yet different? Absolutely! The activity asks learners to explore the relationships between side ratios of triangles they have drawn. Because individuals all draw a triangle with the same angle measures, they...

Lesson Planet

#### Exact Trig Values - Easy Table

Having trouble remembering the trig ratios of common angles? This resource may be the solution! Using a table, the video instructor describes a memorable pattern. Scholars have an opportunity to practice the pattern during the video.

Lesson Planet

#### SOHCAHTOA - Finding Missing Angles

Apply the trig ratios to find unknown angle measures. Learners review the side and angle relationships in right triangles and then apply the ratios to find the angle measures. The video shows several worked-out examples applying all...

Lesson Planet

#### Finding Trigonometric Ratios

In this finding trigonometric ratios instructional activity, 11th graders solve and complete 22 various types of problems. First, they find the value of each trigonometric ratio to the nearest ten-thousandth. Then, students use a...

Lesson Planet

#### How are Trig Ratios Used to Measure Triangle Sides

Students identify the ratios of trig identities. In this geometry lesson, students solve the missing sides and angles of triangles using trig ratios. They relate the graphs and waves to real life scenarios.

Lesson Planet

#### Right Angle Triangles and the Sine Ratio

In this geometry worksheet, students solve for the missing sides of right triangles and find the different trig ratios using the Pythagorean Theorem. There are 10 questions with an answer key.

Lesson Planet

#### How Do You Find the Sine of an Angle in a Right Triangle?

A trigonometric ratio is a ratio between two sides of a right triangle. In this problem, find sin(A) in the given right triangle. Use the ratio of the opposite side over the hypotenuse.

Lesson Planet

#### Trigonometry Ratios in Right Triangles

In this trigonometry ratios in right triangles worksheet, 10th graders solve 10 different trigonometric ratios that apply to right triangles. First, they define a trigonometric ratio and its three most common ratios, sine, cosine, and...

Lesson Planet

#### Trig Ratios

Students derive the six trigonometric ratios. In this trigonometry lesson, students use trigonometric properties to find the missing angles of triangles.

Lesson Planet

#### Verifying Trig Ratios Using Similar Triangles

Students solve problems of a right triangle using properties of trigonometry. In this geometry lesson, students apply properties of a right triangle to solve problems correctly.

Lesson Planet

#### Review of Trig Ratios

In this trigonometric ratios activity, students solve and complete 10 various types of problems. First, they write the degrees listed in radian measure. Then, students find the exact ratios for each equation. They also find the value of...

Lesson Planet

#### Mnemonics to Remember Your Trig Ratios

In this calculus worksheet, students review mnemonic rhymes to help them remember the different ratios of sine, cosine and tangent. They are funny and memorable for any grade level.

Lesson Planet

#### Measuring Strings using Trig Ratios

Students measure strings. In this trigonometry lesson plan, students use a protractor and scientific calculators to measure strings hanging from the ceiling. Students use trigonometric ratios.

Lesson Planet

#### Worksheet 6.5 Analysis: Trig Equations

In this trig equations learning exercise, students find the product, sum, or difference of given trigonometric ratio equations. This two-page learning exercise contains 12 multi-step problems.

Lesson Planet

#### Chapter 5 Review Math Analysis; Angle Measure

In this angle measure instructional activity students find one positive coterminal and one negative coterminal angle. They convert standard position angles to radians. Students use trig ratios to find the lengths of sides of a triangle...

EngageNY

#### Trigonometry and the Pythagorean Theorem

Ancient Egyptians sure knew their trigonometry! Pupils learn how the pyramid architects applied right triangle trigonometry. When comparing the Pythagorean theorem to the trigonometric ratios, they learn an important connection that...

Lesson Planet

#### Reciprocal Identities

Get a better understanding of the trigonometric functions by taking a look at the flip side. Pupils create angles within a unit circle and compare the values of the standard trigonometric functions to their reciprocal functions. The...

Lesson Planet

#### SOHCAHTOA - Finding Missing Sides Part 1

Explore the meaning and application of the three trigonometric ratios. A thorough video reviews the trig ratios and then shows how to apply them in triangle problems. The instructor demonstrates several examples finding both side and...