Tangents Teacher Resources
Find Tangents educational ideas and activities
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New Review Tangent Lines and the Radius of a Circle
Your Geometry learners will collaboratively prove that the tangent line of a circle is perpendicular to the radius of the circle. A deliberately sparse introduction allows for a variety of approaches to find a solution.
9th - 12th Math 10 Views 1 Download CCSS: Designed
New Review 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, and tangent of various angles.
10th - 12th Math 3 Views 1 Download CCSS: Adaptable
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.
9 mins 10th - 12th Math 4 Views 1 Download
I Can Determine The Height Of A Rocket!
Maybe your class wouldn't be taking a field trip to a rocket launching site, but the ideas presented here could be used for a new by clock tower, tree, or telephone pole. Learners use trigonometric ratios to determine the heights of tall structures.
9th - 12th Math 4 Views 36 Downloads CCSS: Designed
New Review Introduction to Trigonometry
Learners define and apply sine, cosine, and tangent functions to solve right triangles and real-life applications that can be modeled with right triangles, in this five day study involving the mnemonic SOH-CAH-TOA. The unit circle is emphasized as a resource to use to find the trig function values of some popular angles.
9th - 12th Math 12 Views 4 Downloads CCSS: Adaptable
New Review Round and Round the Unit Circle
Your young trigonometry learners will analyze and discover the many valuable relationships on the Unit Circle in this very rich collaborative task. Using co-terminal and reference angles in degrees and radians, learners find and label any angle on the unit circle, as well as find the ratios for all six trigonometric functions: cosine, sine, tangent, secant, co-secant, and cotangent.
9th - 12th Math 13 Views 2 Downloads CCSS: Designed
This unit covers the basic trigonometry including understanding radians, how to convert between radians and degrees, the area of a circle subtended by an angle, basic properties and graphs of sine, cosine, tangent, and solving trigonometric equations.
9th - 12th Math 45 Views 149 Downloads CCSS: Adaptable
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 a quick introduction or review.
9 mins 11th - Higher Ed Math 14 Views 13 Downloads
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 the length of the hypotenuse.
5 mins 6th - 11th Math 3 Views 1 Download
Ratios of Right Triangles
Students find the angle measures of a right triangle given two side lengths. In this finding the angle measures of a right triangle given two side lengths lesson, students record the ratio of a leg and hypotenuse of a right triangle. Students discuss why the ratio remains constant when a common vertice is manipulated.
9th - 12th Math 14 Views 65 Downloads
Similar Parts Investigation
How tall is that flagpole? Your pupils might want to stand on each other's shoulders to answer this, but this activity is all about using the math knowledge they already possess. Using right triangle trigonometric ratios (SOH CAH TOA) and the Pythagorean theorem, young geometers solve real-world problems.
9th - 11th Math 16 Views 29 Downloads CCSS: Designed
Graphing at all Levels: It's a Beautiful Thing!
Mixing math and art is done in this lesson by applying graphing knowledge to create a unique piece of art. This lesson varies acording to the graphing knowledge of the artist. First, learners identify and review various types of graphing techniques using a PowerPoint, and interact with a number of websites to reinforce graphing lines, quadratics, exponentials, and conics.
8th - 12th Math 46 Views 68 Downloads CCSS: Designed
Surface Area and Volume of Conics - Cylinders, Cones, and Spheres
This is a multi-faced unit that looks at circles, arcs, sectors, cylinders, cones, spheres, and hemispheres. The formulas for finding length, area, surface area, and volume are discussed with an eye towards an intuitive understanding. Vocabulary is also stressed.
8th - 11th Math 83 Views 341 Downloads CCSS: Adaptable
Surveying the Ancient World
Astrolabes have been used by explorers and astronomers throughout the ages. But how exactly do they work and what can a young mathematician do with one today? Learners will build a simple version of this tool and then using the altitude, measure the height of various objects.
9th - 12th Math 17 Views 12 Downloads CCSS: Designed
Hunter Fred's Quest for Dinner
Learners solve problems using trigonometric functions, specifically a problem about a tree stand. Pupils try to maximize the distance of hunting sight given certain restrictions. They use the Pythagorean Theorem, sine, cosine, and tangent to determine the best placement of a tree stand on a tree.
9th - 12th Math 4 Views 5 Downloads CCSS: Designed