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Law of cosines Teacher Resources
Find teacher approved Law of Cosines educational resource ideas and activities
Students explore the law of cosines. In this geometry/trigonometry lesson, students investigate the relationship between the Pythagorean Theorem and the law of cosines. The lesson is designed to guide students in deriving the laws of Cosines as it relates to any type of triangle.
Students investigate the law of sines and cosines. In this law of sines and cosines lesson, students construct a 3d sketch of a card table. Students discuss the law of sines and cosines with the teacher. Students use the law of sines and cosines to help in constructing their card table. Students research the cost of materials and determine the cost of their card table.
Students determine the level of accuracy needed for computations involving measurements and irrational numbers. They use the correct number of digits in computation to achieve an appropriate unit or level of accuracy when solving problems. Pupils solve problems using the Law of Sines and Law of Cosines.