To determine The resultant vector R and standard position angle θ by adding the components A = 6.89 , θ A = 123 ° , B = 29 and θ B = 260 ° . Explanation Procedure used: To find x and y components of a vector: 1. Place the vector A such that θ is in standard position. 2. Calculate A x and A y from A x = A cos θ and A y = A sin θ . Use the reference angle if the direction of the component is noted. 3. Check the components to see if each is in the correct direction and has a magnitude that is proper for the reference angle. Adding vectors by components: 1. Add the x -component of the given vectors to obtain R x . 2. Add the y -component of the given vectors to obtain R y . 3. Find the magnitude of the resultant R . Use the equation R = R x 2 + R y 2 . 4. Find the standard-position angle θ for the resultant R . Find the reference angle θ r e f for the resultant R by using the equation θ r e f = tan − 1 | R y | | R x | . Then, use the reference angle and the quadrant of R to determine the standard position angle θ . Calculation: The given vector A = 6.89 is directed at an angle θ A = 123 ° and B = 29 is directed at an angle θ B = 260 ° Sketch the figure of the corresponding vectors as shown below in Figure 1. From Figure 1, the it is observed that resultant vector is represented as R . The x and y components of a vector A is, A x = A cos θ and A y = A sin θ A x = 6.89 cos 123 ° and A y = 6.89 sin 123 ° A x ≈ − 3.75 and A y ≈ 5.78 Similarly, the x and y components of a vector B is, B x = B cos θ and B y = B sin θ B x = 29 cos 260 ° and B y = 29 sin 260 ° B x ≈ − 5.04 and B y ≈ − 28.6 Then, the x component of the resultant vector R is, R x = A x + B x = ( − 3

Pearson eText for Basic Technical Mathematics with Calculus -- Instant Access (Pearson+)

11th Edition

ISBN: 9780137554843

Author: Allyn Washington, Richard Evans

Publisher: PEARSON+

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Chapter 9.3, Problem 20E

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The resultant vector R and standard position angle θ by adding the components A=6.89,θA=123°,B=29 and θB=260°.

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Chapter 9.3, Problem 19E

Chapter 9.3, Problem 21E

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Chapter 9 Solutions

Pearson eText for Basic Technical Mathematics with Calculus -- Instant Access (Pearson+)

Ch. 9.1 - For the vectors in Example 2, show that R = B + C...Ch. 9.1 - Prob. 2PE Ch. 9.1 - Prob. 1E Ch. 9.1 - Prob. 2E Ch. 9.1 - Prob. 3E Ch. 9.1 - Prob. 4E Ch. 9.1 - Prob. 5E Ch. 9.1 - Prob. 6E Ch. 9.1 - Prob. 7E Ch. 9.1 - Prob. 8E

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