T.9 and *T.8 - Laws of Sines and Cosines

T.9  The student will identify, create, and solve real-world problems involving triangles. Techniques will include using the trigonometric functions, the Pythagorean Theorem, the Law of Sines, and the Law of Cosines.

T.8  The student will create and solve practical problems involving triangles

UNDERSTANDING THE STANDARD

• A real-world problem may be solved by using one of a variety of techniques associated with triangles.

· A practical problem may be solved by using one of a variety of techniques associated with triangles.

ESSENTIALS

T.9Write a real-world problem involving triangles.

T.9Solve real-world problems involving triangles.

·  T.81  Create and solve practical problems involving triangles.

T.9Use the trigonometric functions, Law of Sines, and Law of Cosines to solve real-world problems.

·  T.82  Use the trigonometric functions, Pythagorean Theorem, Law of Sines, and Law of Cosines to solve practical problems.

T.9Use the trigonometric functions to model real-world situations.

·  T.83  Use the trigonometric functions to model practical situations.

T.9Identify a solution technique that could be used with a given problem.

·  T.84  Identify a solution technique associated with triangles that could be used with a given problem.

T.9Prove the addition and subtraction formulas for sine, cosine, and tangent and use them to solve problems.

·  T.85  Apply the sum and difference identities for sine, cosine, and tangent to solve problems.

KEY VOCABULARY

Updated: Oct 27, 2017