'Angle formula' diaporamas de présentation

Double-Angle and Half-Angle Formulas

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Double- and half-angle formulae

Double- and half-angle formulae. Trigonometry. Sine double-angle formulae. Recall from the last section, the sine of the sum of two angles; sin( ? + ?) = sin ? cos ? + cos ? sin ? We will use this to obtain the sine of a double angle.

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Section 7.3 Double-Angle, Half-Angle and Product-Sum Formulas

Section 7.3 Double-Angle, Half-Angle and Product-Sum Formulas. Objectives: To understand and apply the double-angle formula. To understand and apply the half-angle formula. To understand and apply product-sum formula. Class Work . Evaluate csc780 ? Find the exact value of tan165?.

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Classifying Polygons

Classifying Polygons. What is a polygon?. Definition: Closed plane figure with at least three sides Sides only meet at their endpoints (called vertices) Regular polygons have all sides and angles congruent. Classifying Polygons. What is the rule for regular polygons?.

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Find sin 2x, cos 2x, and tan 2x from the given information: {image} Select the correct answer:

1. 2. 3. Find sin 2x, cos 2x, and tan 2x from the given information: {image} Select the correct answer:. {image} {image} {image}. 1. 2. 3. Simplify the expression by using a double-angle formula or a half-angle formula: {image} Select the correct answer:. {image} {image} {image}. 1.

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