Law of Sines 9.3.4.2 Apply the trigonometric ratios sine, cosine and tangent to solve problems, such as determining lengths and areas in right triangles.

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Presentation transcript:

Law of Sines 9.3.4.2 Apply the trigonometric ratios sine, cosine and tangent to solve problems, such as determining lengths and areas in right triangles and in figures that can be decomposed into right triangles. Know how to use calculators, tables or other technology to evaluate trigonometric ratios.

LAW OF SINES: Works in ANY TRIANGLE Guiding Question: What is the relationship between the angles and sides of non-right triangles? Lesson Obj: IWBAT to find side and angle measures in any kind of triangle. LAW OF SINES: Works in ANY TRIANGLE

Guiding Question: What is the relationship between the angles and sides of non-right triangles? You can use the Law of Sines to find angle and side lengths in a triangle. Find the length of c

Guiding Question: What is the relationship between the angles and sides of non-right triangles?

Guiding Question: What is the relationship between the angles and sides of non-right triangles? The distance between Towns A and B is 56 mi. The angle formed by the road between Towns A and B and the road between Towns A and C measures 46. The angle formed by AB and BC measures 115. Find the distance between Town B and Town C. Solve the following. Draw a picture Label what you are trying to find Set-up the problem Solve it.

Assignment: Law of Sines Worksheet Guiding Question: What is the relationship between the angles and sides of non-right triangles? Assignment: Law of Sines Worksheet