Law of Cosines Teacher Resources

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In this trigonometry worksheet, students apply the Law of Sines and Cosines to solving for missing sides of a triangle. There are 5 questions with an answer key.
Students apply the law of sines to solve problems. In this trigonometry lesson, students apply the correct formula to solve a non-right triangle. They apply these concepts to navigational vectors and find the direction and magnitude.
In this trig worksheet, 12th graders, students rewrite angles using the law of sine and cosine. They find each missing angle of a triangle. There are 8 questions on this chart.
In this law of cosines worksheet, students use the law of cosines to solve information on given triangles This one-page worksheet contains four problems.
In this law of cosines activity, students use the law of cosines to solve equations containing a triangle. They find the area of a triangle and determine the length of one side of a triangle. This two-page activity contains eight multi-step problems.
In this law of cosines learning exercise, students determine the length of one side of a triangle. They find the angle measurement of one angle in a triangle. This two-page learning exercise contains eight problems.
In this sine and cosine worksheet, students read story problems and use the trigonometric functions to determine distance, height, and width of objects. Students extrapolate information from the story and draw models. This two-page worksheet contains 15 problems.
In this law of sines worksheet, students read story problems. They use both algebra and the law of sines and cosines to solve problems. This two page worksheet contains seven problems.
In this trigonometry worksheet, learners use trigonometric functions to determine the measurement of angles and the length of sides in given figures. Most figures are comprised of rectangles containing parallel and perpendicular lines, as well as diagonals. This five-page worksheet contains eight problems.
This worksheet provides excellent practice in applying the Law of Sines and the Law of Cosines. It consists of six problems, each of which presents a real-world scenario with an accompanying diagram. The task in each exercise is to answer a specific question about the scenario. To answer the question, learners must use the appropriate law and interpret the result within the context of the problem. You could use these exercises in several different ways. Set up stations around the classroom with an exercise at each station, use them for independent practice or homework, have students work in groups to complete them, or use them for assessment.
Sal solves an interesting question in this video from a college entrance exam in India that requires one to use knowledge of arithmetic progressions, trigonometric identities, and algebra. He works through solving the problem in a step-by-step fashion by talking through his thought process in order to help one follow the solution as well as understand why certain steps are taken.
Need a quick calculation for the area of an ellipse, or the volume of the triangular pyramid? There are 39 different solvers in this app, to give you the answer to numerous geometry and trigonometry problems.
In this trigonometry learning exercise, students use the sine and cosine law to solve problems. They investigate obtuse triangles using these laws. There are 40 questions.
Sal solves an interesting question in this video from a college entrance exam in India that requires one to use knowledge of arithmetic progressions, trigonometric identities, and algebra. He works through solving the problem in a step-by-step fashion by talking through his thought process in order to help one follow the solution as well as understand why certain steps are taken.
In this math review worksheet, students review for their exam using a variety of worksheets on different topics. There are 34 problems plus some word problems in the worksheet booklet.    
In this part 2 video, Sal finishes the trigonometric word problem of the wayward ship captain. He wisely continues the algebra work on the problem before finally turning to his calculator for the very last calculation.
Sal continues the Ferris wheel problem in a previous video by graphing the function between zero and 30 seconds.
In this geometric mean and Pythagorean Theorem worksheet, 10th graders solve 94 various types of problems related to determining the geometric mean and using the Pythagorean Theorem to measure triangles. They find the indicated trigonometric ratio as a fraction and as a decimal rounded to the nearest ten-thousandth. Students also draw a given triangle and write an equation to use to find the unknown values.
In this geometric calculations of solar storms worksheet, students use a diagram indicating the location of 2 STEREO satellites, the earth and the sun to calculate the distance between a Coronal Mass Ejection and the Earth. They use scaled construction or geometric calculations to solve for their answers. They also determine how long it takes for the Coronal Mass Ejection to reach the sun.
In this solar storms learning exercise, students use a diagram given the location of two STEREO spacecraft satellites, a coronal mass ejection, the sun and the Earth to solve 2 problems about the coronal mass ejection. Students use segments, angles and trigonometric identities to determine the length of a segment in the diagram. They determine the length the coronal mass ejection traveled and the time it took to travel that length.

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