'5 3b' presentation slideshows

14-5 Sum and Difference of Angles Formulas

14-5 Sum and Difference of Angles Formulas. The Formulas. Use the formula . Sum of angles. Evaluate each expression. Example 5-1a. Example:. Find the exact value of sin 75 ?. Multiply. Simplify. Answer:. Example 5-1b. Use the formula. Difference of angles.

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Lesson 8-5 Rhombus and Squares

Lesson 8-5 Rhombus and Squares. A rhombus is a quadrilateral with all 4 sides congruent If a parallelogram is both a rhombus and a rectangle, then it is a square. Rhombus Theorems. Theorem 8.15 The diagonals of a rhombus are perpendicular Theorem 8.16

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5-Minute Check on Lesson 10-4

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