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### We found 113 resources with the keyterm cosine

Videos (Over 2 Million Educational Videos Available)

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#### 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.

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#### 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...

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

Trigonometry? What's trigonometry. Well, something to do with triangles, right? Right! Right triangles! In this problem, find the missing length of one of the sides. So set this up as a ratio: cosine(A) = adjacent side length divided by...

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#### 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...

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#### Calculus Worksheet

In this calculus worksheet, students solve 10 different problems that include determining the first derivative in each. First, they apply properties of logarithmic functions to expand the right side of each equation. Then, students...

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#### Does Your Field Measure Up

Students measure angles using a plane table kit. In this geometry lesson plan, students use trigonometric identities to find the values of the length of a football field.

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#### 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...

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#### Adjacent Right Triangle Problems

The instructor identifies the terms used to solve for the angle of adjacent right triangles. He does not have an example to solve a problem.

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#### Trigonometric Functions

Here is a worksheet that includes three short trigonometry problems. Learners must use trigonometric definitions and identities to solve. Use this resource to review trigonometry, or as an assessment.

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#### Sine, Cosine, and Tangent Ratios

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...

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#### Quadrantal Angles

In this quadrantal angle worksheet, students determine the six trigonometric for each quadrant angle. This one-page worksheet contains 36 problems, with answers printed at the bottom of the page.

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#### Worksheet 4 - Math 126: Sketching Polar Equations

In this sketching polar equations activity, learners solve 5 short answer and graphing problems. Students describe a curve given the equation of the curve in polar form. Learners sketch a graph of the equation.

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#### Triginometry: Find the Unknown Side

In this Trigonometry worksheet, students use the Pythagorean theorem to calculate the length of side x. There are 5 questions to solve and submit.

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#### Trigonometry Formula Worksheet

In this trigonometry worksheet, students solve right triangle problems. They find the sine, cosine and tangent of given triangles. This on-line, interactive worksheet contains 6 problems. Answers are provided.

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#### Easy Worksheet: Trigonometry

In this trigonometry worksheet, students solve 4 short answer problems. Students find the sine, cosecant, secant or cotangent of an angle given a diagram of a right triangle with various measurements labeled.

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#### 6.5 Skill Builder: Trigonometric Identities

In this trigonometric identities learning exercise, students solve 16 multi-part short answer problems. Students use the quotient identity and Pythagorean identity to simplify trigonometric expressions. Students factor trigonometric...

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#### Applied Trigonometry Problems

In this applied trigonometry problems worksheet, students solve 12 short answer word problems. Students use trigonometric ratios to find angles of elevation and depression. Students find distances between objects using trigonometric...

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#### Trigonometry

In this right triangles learning exercise, students use trigonometric ratios to determine the length of a side of a triangle or a missing angle measurement. This two-page learning exercise contains 20 problems.

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#### Trigonometry Homework

In this right angles worksheet, learners use trigonometric ratios to determine the length of a missing side or a missing angle of a right triangle. This two-page worksheet contains 19 problems.

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#### Exercise Set 5.4: Inverse Trigonometric Functions

In this trigonometric functions worksheet, high schoolers solve 68 multi-part short answer and graphing questions. Students evaluate inverse trigonometric functions for a given value. High schoolers graph inverse trigonometric functions.

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#### Introduction to Law of Sines

Students solve problems using the law of sines. In this sines instructional activity, 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...

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#### Pre-Calculus Test Chapter 5: Identities

In this identities worksheet, students match equivalent expressions containing sine, cosine, and tangent. They solve equations, find intervals, and determine all solutions to an interval. Students prove given identities. This...

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#### Trigonometry Practice: Trigonometric Graphs #2

For this trigonometric functions worksheet, high schoolers solve 8 multiple choice and graphing problems. Students graph trigonometric functions given an equation and match graphs to a given scenario.

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#### The Hyperbolic Sine and Cosine

In this sine and cosine instructional activity, students find derivatives and integrals of 6 functions. Students find derivatives, indefinite integrals and the area between two curves.