'Remaining sides' presentation slideshows

Warm-up:

Warm-up:. Solve the triangle. 15 a b. 100 50 x. Answers. X=30 ° b = 29.544 a = 22.981. Precalculus Lesson 6.2. Check:

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7.4

7.4. OBJ: Show that two triangles are similar using the SSS and SAS Similarity Theorems. Side-Side-Side (SSS) Similarity Theorem. If the corresponding sides of two triangles are proportional, then the triangles are similar. Example 1. Use the SSS Similarity Theorem.

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The Law of Cosines

The Law of Cosines. Solve for a 2. The Law of Cosines. Use for--. SSS. SAS. Write other variations for both. + c 2. - 2 bc cos A. b 2. a 2 =. + c 2. a 2. b 2 =. - 2 ac cos B. - 2 ab cos C. + b 2. a 2. c 2 =. The Law of Cosines. Finding an Angle Using the Law of Cosines.

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Section 8-5

Section 8-5. Proving Triangles are Similar. Side-side-side Similarity theorem (sss theorem). If the lengths of the corresponding sides of two triangles are proportional, then the triangles are similar. If. K. L. Y. Z. J. X. then.

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7. Applications of Trigonometry

C. a. b. A. B. c. 7. Applications of Trigonometry. Sine Formula. Cosine Formula. a 2 = b 2 + c 2 - 2 bc cos A. b 2 = a 2 + c 2 - 2 ac cos B. c 2 = a 2 + b 2 - 2 ab cos C. 7. Applications of Trigonometry. (a) How to memorize the sine formula and the cosine formula?.

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