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yuradex [85]
3 years ago
7

Need to find the direction angle for each vector. #10 and #12 please!

Mathematics
1 answer:
crimeas [40]3 years ago
5 0

Answer:

10)  - 45 degrees

12)  0 degrees

Step-by-step explanation:

10)

Find the x and y components that define the vector that joins C with D:

x-component: -4 - (-8) = - 4 + 8 = 4

y-component:  4 - 8 = -4

use the tangent function to find the angle \theta:

tan(\theta)=\frac{y-comp}{x-comp}=\frac{-4}{4}  = -1\\\theta = -45^o

12)

Find the x and y components that define the vector that joins A with B:

x-component: 7 - 4 = 3

y-component:  - 1 - (-1) = -1 + 1 = 0

use the tangent function to find the angle \theta:

tan(\theta)=\frac{y-comp}{x-comp}=\frac{0}{3}  = 0\\\theta = 0^o

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Answer:

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Step-by-step explanation:

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Time (Minutes) --->

If it was instead a geometric equation, it would go by a multiple, such as the number 2. Or, ×2 each minute.

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6 0
3 years ago
-6x+7(1-x)=-4(x-4) if you help thank you so much!!!
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Answer:
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Step by step explanation:
Rearrange terms
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Distribute
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Distribute:
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Simplify
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Add 4x to both sides of the equation
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Combine like terms
Combine like terms
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Answer:

I believe it is D.. Im not 100% sure though !! goodluck

Step-by-step explanation:

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