# Trigonometric Ratio Teacher Resources

Find Trigonometric Ratio lesson plans and worksheets
Showing 1 - 24 of 104 resources
Lesson Planet

#### Worksheet 6.6 Analysis: Trig Ratios

For Students 11th - Higher Ed
In this trig ratios instructional activity, students determine the exact value of given expressions. This one-page instructional activity contains 12 multi-step problems.
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#### Trig Ratios of General Angles

For Students 10th - 12th
For this trig ratios worksheet, students determine the angle measurement of trigonometric ratios. They find the value of trigonometric function. This approximately four-page worksheet contains 24 problems. Answers are provided on the...
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#### Basic Trigonometric Ratios

For Teachers 11th - 12th
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

#### Finding Trigonometric Ratios

For Students 11th
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...
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#### Similar Right Triangles and Trig Ratios

For Students 9th - 11th Standards
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...
3:56
Lesson Planet

#### Exact Trig Values - Easy Table

For Students 9th - 12th Standards
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.
3:21
Lesson Planet

#### SOHCAHTOA - Finding Missing Angles

For Students 9th - 12th Standards
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

#### Trigonometry Ratios in Right Triangles

For Students 10th
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

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

For Students 9th - Higher Ed
In this angle measure worksheet 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 or angle...
Lesson Planet

#### Trig Ratios

For Teachers 9th - 10th Standards
Students derive the six trigonometric ratios. In this trigonometry activity, students use trigonometric properties to find the missing angles of triangles.
Lesson Planet

#### Review of Trig Ratios

For Students 11th - Higher Ed
In this trigonometric ratios learning exercise, 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...
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#### Measuring Strings using Trig Ratios

For Teachers 4th - 9th
Young scholars measure strings. In this trigonometry lesson, students use a protractor and scientific calculators to measure strings hanging from the ceiling. Young scholars use trigonometric ratios.
3:21
Lesson Planet

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

For Teachers 7th - 11th
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...
3:13
Lesson Planet

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

For Teachers 6th - 11th
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...
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#### Trigonometric Graphs

For Teachers 10th - 12th
Young scholars graph and compare trig ratios. In this trigonometry lesson, students identify the phase shift, and period of each graph. They differentiate between sine, cosine and tangent graphs.
4:29
Lesson Planet

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

For Teachers 6th - 11th
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

#### Sine, Cosine, and Tangent Ratios

For Students 11th
In this ratios worksheet, 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...
EngageNY

#### Trigonometry and the Pythagorean Theorem

For Students 9th - 11th Standards
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...
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#### Reciprocal Identities

For Students 10th - 12th Standards
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...
4:37
Lesson Planet

#### SOHCAHTOA - Finding Missing Sides Part 1

For Students 9th - 12th Standards
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...
2:34
Lesson Planet

#### SOHCAHTOA - Finding Missing Sides Part 2

For Students 9th - 12th Standards
Explore some right triangle trigonometry with a straightforward video lesson. The instructor presents problems requiring scholars to use trig ratios to find unknown side measures. She provides worked-out solutions for those needing...
Lesson Planet

#### Double Angle Identities: Ferris Wheel

For Students 10th - 12th
Use a Ferris wheel to soar to new heights of understanding on double angle identities. Here is an interactive that applies an example of a Ferris wheel to show how doubling the angle does not double the value of a trigonometric ratio....
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#### How are Trig Ratios Used to Measure Triangle Sides

For Teachers 8th - 11th
Students identify the ratios of trig identities. In this geometry lesson plan, 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

For Students 10th - 11th
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.