### We found 187 reviewed resources for sin/cosine

Lesson Planet

#### Sin Cos Tan - Basic Trigonometry

Trigonometry learners can get confused about the relationships in a right triangle. This video clearly lays out how to solve for the length of one side of a triangle using cosine. Though not engaging, it is educational. Have your...

EngageNY

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

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

#### Other Graphs—Sin, Cos, Tan, and Exponential

Explore the graphs of the trigonometric functions. Learners see the graphs of the sine, cosine, tangent, and exponential functions. Focusing on the parent function, the video instructor discusses key features and how to identify each...

Lesson Planet

#### Sine and Cosine

What is the complementary relationship between sine and cosine? Using a right triangle, pupils explain why the sine of one acute angle is equal to the cosine of the other. The triangle measurements are given as variables.

Lesson Planet

#### Sin, Cos, and Tan of Right Triangles

Students explore the sine, cosine, and tangent relationships of a right triangle. In this sine, cosine, and tangent relationships of a right triangle lesson, students construct a right triangle. Students develop the sine, cosine, and...

EngageNY

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

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

#### Sine and Cosine Rules and Area of Triangles

Learners discover how to find missing sides and angles using trigonometry. Scholars first watch a video covering the Law of Sines and Cosines, as well as the area formula for a triangle. To test their knowledge, they complete a worksheet...

Lesson Planet

#### Sines and Cosines

In this sines and cosines worksheet, 11th graders solve and complete 14 different types of problems. First, they write the sine and cosine of a point as fractions is simplest form. Then, students find the measure of an angle to the...

Lesson Planet

#### Law of Sines and Law of Cosines

In this sine and cosine worksheet, students use the law of sines and law of cosines to find the required part of a triangle. Examples and explanations are provided. This three-page worksheet contains 24 problems. Answers are listed at...

Lesson Planet

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

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.

Lesson Planet

#### Sine, Cosine, Tangent

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

#### Practice 8-4: Sine and Cosine Ratios

In this sine and cosine ratios worksheet, students write ratios for modeled triangles. They find specified angle measurements and length of one side of a triangle. This one-page worksheet contains 18 problems.

Lesson Planet

#### Intro to the Trigonometric Ratios

This video introduces the basics of trigonometry. It starts by defining a right triangle and showing two different examples of finding the ratios of sine, cosine, and tangent using the SOH-CAH-TOA mnemonic. This resource could be used as...

Lesson Planet

#### Proof: cos(a+b)=(cos a)(cos b)-(sin a)(sin b)

Using a similar method that he used to prove the sum of angles formula for sine, Sal shows the proof of the cosine sum of angles formula, cos (a+ b) = cos (a) cos (b) - sin (a) sin (b). This proof also uses the SOH-CAH-TOA model and some...

Lesson Planet

#### Sine, Cosine, and Tangent Practice

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,...

Lesson Planet

#### Calculations with Sine and Cosine

Practice makes perfect and perfecting those trigonometric functions are vital in trigonometry. The task requires evaluating cosine and sine values at common degree measures before looking at the results. Is there a pattern when the...

Lesson Planet

#### Right Angle Triangles an the Cosine Ratio

In this right triangle worksheet, students use trigonometric ratios to find the missing measurement of right triangles. This nine-page worksheet contains 10 multi-step problems. Answers are provided at the end of the worksheet.

EngageNY

#### What Is a Trigonometric Identity?

Protect yourself from identity theft! Establishing a strong understanding of the Pythagorean identity allows learners to prove that sine^2x + cos^2x = 1. They then use the identity to find sine or cosine ratios given the other.

Lesson Planet

#### Right Triangle Relationships

Work with sine and cosine relationships three ways. Three questions assess pupils' understanding of the trigonometric relationship between complementary angles. Learners use the value of one ratio to determine the other and the equal...

Lesson Planet

#### Are You Pulling My Trig?

Build on young scholars' knowledge about triangles with this introductory instructional activity on trigonometric ratios. After first exploring key terms in a scavenger hunt activity, students solve a series of guided and independent...

Lesson Planet

#### Sin, Cos and Tangent

Students find the identity o sine, cosine and tangent. In this precalculus lesson, students solve and identify the different parts of a right triangle. They use the ratios of the Pythagorean Theorem to find the missing side or angle.

Lesson Planet

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

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.

Lesson Planet

#### Basic Trigonometry ll

Sal continues with examples of finding the sine, cosine, and tangent of an angle in a right triangle using SOH-CAH-TOA. In his examples, he reviews the use of the Pythagorean Theorem and rationalizing the denominator of a fraction. He...

Lesson Planet

#### The unit circle definition of trigonometric function

In this video, Sal shows how the sine and cosine of an angle are defined on the unit circle. He inscribes a 30-60-90 triangle in the unit circle and explains how one can use SOH-CAH-TOA to find the coordinates on the circle.