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113 resources with the keyterm cosine

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Other Resource Types (113)
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Instructional Video9:04
Lesson Planet: Curated OER

The unit circle definition of trigonometric function

For Students 10th - 12th
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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Instructional Video9:17
1
In 1 Collection
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Intro to the Trigonometric Ratios

For Students 11th - Higher Ed
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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Instructional Video5:07
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How Do You Find a Missing Side of a Right Triangle Using Cosine?

For Teachers 6th - 11th
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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Instructional Video3:33
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Sin Cos Tan - Basic Trigonometry

For Teachers 9th - 12th
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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Worksheet
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Calculus Worksheet

For Students 12th - Higher Ed
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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Lesson Plan
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Does Your Field Measure Up

For Teachers 9th - 11th
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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Instructional Video3:21
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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...
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Instructional Video3:19
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Adjacent Right Triangle Problems

For Teachers 10th - 12th
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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Worksheet
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Trigonometric Functions

For Students 9th - 12th Standards
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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Worksheet
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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...
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Lesson Plan
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Quadrantal Angles

For Teachers 10th - 12th
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
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Worksheet 4 - Math 126: Sketching Polar Equations

For Students 9th - 12th
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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Interactive
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Triginometry: Find the Unknown Side

For Students 9th - 12th
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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Interactive
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Trigonometry Formula Worksheet

For Students 10th - 12th
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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Worksheet
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Easy Worksheet: Trigonometry

For Students 9th - 12th
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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Worksheet
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6.5 Skill Builder: Trigonometric Identities

For Students 9th - 12th
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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Worksheet
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Applied Trigonometry Problems

For Students 9th - 12th
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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Worksheet
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Trigonometry

For Students 10th - 12th
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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Worksheet
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Trigonometry Homework

For Students 10th - 12th
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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Lesson Plan
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Exercise Set 5.4: Inverse Trigonometric Functions

For Teachers 9th - 12th
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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Lesson Plan
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Introduction to Law of Sines

For Teachers 10th - 12th
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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Worksheet
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Pre-Calculus Test Chapter 5: Identities

For Students 10th - 12th
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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Lesson Plan
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Trigonometry Practice: Trigonometric Graphs #2

For Teachers 9th - 12th
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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Worksheet
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The Hyperbolic Sine and Cosine

For Students 11th - 12th
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.