Understanding Vector Forms

The video tutorial covers three different forms of representing vectors: component form, linear combination, and using magnitude with angle measures. It explains how to calculate the component form by subtracting the initial point from the terminal point, and how to express vectors as linear combinations using unit vectors i and j. The tutorial also demonstrates finding the magnitude of a vector using the Pythagorean theorem and determining the direction using trigonometric functions, specifically tangent and inverse tangent, to find the angle. The video concludes by showing how to express vectors using magnitude and angle measures.

What are the three forms of a vector discussed in the video?

• Component form, linear combinations, and angle measure

• Scalar form, matrix form, and angle measure

• Vector form, scalar form, and matrix form

• Polar form, Cartesian form, and linear combinations

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CCSS.HSN.VM.A.2

How do you find the component form of a vector?

• Divide the terminal point by the initial point

• Multiply the initial point by the terminal point

• Subtract the initial point from the terminal point

• Add the initial and terminal points

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CCSS.HSN.VM.A.2

What is the component form of a vector with initial point (2, 3) and terminal point (5, 6)?

• (2, 3)

• (3, 3)

• (5, 6)

• (3, 6)

In a linear combination, what does the unit vector 'i' represent?

• Diagonal direction

• Magnitude

• Horizontal direction

• Vertical direction

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CCSS.HSN.VM.A.1

How would you express a vector with 3 units to the right and 3 units up as a linear combination?

• 3i - 3j

• -3i - 3j

• 3i + 3j

• -3i + 3j

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CCSS.HSN.VM.A.1

What theorem is used to calculate the magnitude of a vector?

• Fundamental theorem of calculus

• Remainder theorem

• Binomial theorem

• Pythagorean theorem

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CCSS.HSN.VM.A.1

What is the magnitude of a vector with components (3, 3)?

• 6

• 3√2

• 9

• 3

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CCSS.HSN.VM.A.2

How do you find the direction angle of a vector using trigonometry?

• Use the sine function

• Use the cosine function

• Use the tangent function

• Use the secant function

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CCSS.HSN.VM.A.2

What is the angle measure of a vector with equal horizontal and vertical components?

• 90 degrees

• 60 degrees

• 45 degrees

• 30 degrees

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CCSS.HSN.VM.A.2

What is the cosine of 45 degrees used for in vector representation?

• To find the magnitude

• To find the direction

• To find the horizontal component

• To find the vertical component

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CCSS.HSN.VM.A.2