Tangents Teacher Resources
Find Tangents educational ideas and activities
Showing 1 - 20 of 755 resources
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
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
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 instructional activity. 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
New Review Are You Pulling My Trig?
Build on students' knowledge about triangles with this introductory lesson on trigonometric ratios. After first exploring key terms in a scavenger hunt activity, students solve a series of guided and independent practice problems dealing with the sine, cosine, and tangent functions.
9th - 12th Math 5 Views 1 Download 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 13 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
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 5 Views 37 Downloads CCSS: Designed
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
New Review The Inverse Functions
Learners find missing side lengths and angles in right triangles and real-life problems that can be modeled by right triangles using SOH-CAH-TOA, the reciprocals of sine (cosecant), cosine (secant), and tangent (cotangent), and the inverse trig functions (arcsine, arccosine, arctangent).
9th - 12th Math 3 Views 0 Downloads CCSS: Adaptable
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
Young scholars 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.
9th - 12th Math 14 Views 65 Downloads
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
Indirect Measurement Technique: Using Trigonometric Ratios
Ninth graders create clinometers using a protractor, weight, and string. They work in pairs to practice sighting objects above or below their line of sight. Students use ratios of right triangles to determine the height of a predetermined object.
9th Math 7 Views 43 Downloads
Drawing a Line Tangent to a Circle
Explore lines tangent to a circle. For this math lesson, students manipulate circles and lines on a TI calculator. They draw a circle and analyze perpendicular lines intersecting the circle in only one place. This activity works best if each student has a TI-83 or TI-84 for their own viewing.
9th - 12th Math 10 Views 4 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