Compound Angle Formulae

Aug 13, 2012

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Compound Angle Formulae

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1. Compound Angle Formulae Proof for:

Empirical Formulae

Empirical Formulae. “The Empirical Formula Strikes Back”. Type 1: Determining the empirical formula of a compound from mass. Ex. 1. What is the empirical formula for a compound if an 8.1 g sample contains 4.9 g of magnesium and 3.2 g of oxygen?

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Formulae

Formulae. Hydrochloric acid Nitric acid Sulphuric acid Phosphoric acid Sodium hydroxide Potassium hydroxide Copper oxide Sodium carbonate Calcium carbonate Sodium chloride. Hydrogen Oxygen Water Carbon dioxide Carbon monoxide Ammonia Ozone Nitrogen Chlorine Bromine .

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Chemical Formulae

Chemical Formulae. Christopher chong. Prior knowledge. What are symbols used for? Answer: A symbol is use to represent one atom of an element. Can you complete the following table ?. Who is this ?. Dmitri Mendeleev C reator of the first version of the periodic table of elements .

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Writing formulae

Writing formulae. Objectives To learn how to write formulae for compounds Outcome: you should be able to write the formulae for inorganic covalent compounds and ionic compounds comprising single atom ions or polyatomic ions. Ionic compounds remember. Using valencies.

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Empirical formulae

Empirical formulae. An empirical formula is the smallest whole number ratio of atoms in a compound. Eg; Hexane has a molecular formula of C 6 H 14 . This gives a C : H ratio of 6 : 14 , which can be simplified to; 3 : 7 This cannot be further simplified whilst remaining whole numbers.

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Probability Formulae

Probability Formulae. Chapter 10 Probability Formulae. Look over the formulae under the first 3 headings. This is assumed knowledge. We are going to go through the rest of the formulae in the next two lessons. . A. B. Mutually Exclusive Events.

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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( α + β) = sin α cos β + cos α sin β We will use this to obtain the sine of a double angle.

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Half-angle formulae

Half-angle formulae. Trigonometry. Half-angle formula: sine. We start with the formula for the cosine of a double angle: cos 2θ = 1− 2sin 2 θ Now, if we let θ = α /2, then 2θ = α and our formula becomes: cos α = 1 − 2sin 2 (α/2). Solving for sin(α/2).

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UAM Formulae

UAM Formulae. Example questions. Free fall q 1. A chemistry text book is thrown downwards at 13.00 m/s from the top of a 25.00 m high building. What is the final velocity when it just hits the ground? How long will it take to reach the ground? How far did it fall in the 1 st second?.

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Chemical Formulae

Chemical Formulae. Learning Objectives: Calculate the formula mass of elements and compounds Explain how the amount of a substance can be measured. Mass number.

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Formulae

Formulae. For each severity adjustment entity, X i = i th test result in original units in end-of-test order T i = i th test result in appropriate units in end-of-test order (T i = X i unless a transformation is used in which T i = transformed(X i ))

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Rearranging Formulae

Rearranging Formulae. Why rearrange formulae?. Sometimes to find answers to calculations we need to rearrange the formulae to get the unknown we want. There is a methodical way to do this using the ideas we use for solving equations by working backwards. -u. ÷ a. -u. ÷ a.

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compound angle formula

compound angle formula. Suppose that you have two angles: Angle A and Angle B . Then we can prove that sin ( A + B ) = sin A cos B + cos A sin B. compound angle formula.

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Formulae

Formulae. Cooking a Turkey. A roast turkey takes 20 minutes per pound to cook 5 pounds would take 20 x 5 minutes to cook 10 pounds would take 20 x 10 minutes to cook n pounds would take 20 x n minutes to cook Formula: T = 20 n. Formulae. Force = mass x acceleration (F = ma)

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Compound Angle Formulae

Compound Angle Formulae. Nasty Example. DC = 3, DA = 5. Write the exact value of sin DAB. L DAB = 90 + x. sin (90 + x). sin DAB =. 3. C. D. x. 5. B. A. ?. ?. sin (90 + x). = sin 90 cos x. + cos90 sin x. = 1( 4 / 5 ) + 0( 3 / 5 ). = 4 / 5. 3. C. D. 4.

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Formulae

Formulae. http://hench-maths.wikispaces.com. Perimeter Formulae for Polygons. Area of rectangle. Area= bh. h=height. b=base. Base is at RIGHT ANGLE to Height. Area of Square. A square is a rectangle with all equal sides Base=Height. Area= b 2. Height=Base=b. b=base.

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Compound Angle Formulae

Compound Angle Formulae. 1. Addition Formulae. Example:. 2. Formulae Involving Double Angle (2A). Mixed Examples:. Substitute form the tan (sin/cos) equation. +ve because A is acute. Similarly:. 3-4-5 triangle !!!. A is greater than 45 degrees – hence 2A is greater than 90 degrees.

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Using formulae

Vocabulary. Using formulae. Variable. Formula. Coefficient. Substitution. Expression. Terms. Some expressions. Using formulae. y + 3. 3 more than y. y. y + 3. Some expressions. Using formulae. ½y. Half of y. y. ½ y. ½ y. Some expressions. Using formulae. p - 4.

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COMPOUND ANGLE FORMULAE: sin(A + B)

Draw a horizontal base line. COMPOUND ANGLE FORMULAE: sin(A + B). Label this angle A. Add a second line at an angle to the first. COMPOUND ANGLE FORMULAE: sin(A + B). A. Label this angle B. Add a third line above the second. COMPOUND ANGLE FORMULAE: sin(A + B). B. A.

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Formulae

S4. Formulae. Formulae expressed in words. Evaluating Formulae. www.mathsrevision.com. Exam Type Questions. S4. Starter Questions. 5 cm. 3 cm. 3 cm. 2.5 cm. 4 cm. www.mathsrevision.com. Formulae. S4. Learning Intention. Success Criteria.

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Formulae

S4 Credit. Formulae. Using Formulae. Making Formulae. Change the Subject of Formula. www.mathsrevision.com. Harder Subject of Formula. Understanding Formulae. S4 Credit. 1. Calculate 3 + 2 x 4. Starter Questions. Formulae. S4 Credit. Learning Intention. Success Criteria.

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