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Sveta_85 [38]
3 years ago
15

Which relationships hold true for the sum of the magnitudes of vectors u and v, which are perpendicular

Mathematics
1 answer:
alexgriva [62]3 years ago
3 0
||u+v||=sq rt(||u||^2+||v||^2) ... Think of the pythagorean theorem
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Hokiris ladder has two legs that are each 8 feet long. When the ladder is opened safely and locked for use, the legs are 4 feet
guajiro [1.7K]

To solve this problem you must apply the proccedure shown below:

1- The ladder forms an isosceles triangle, because it has two equal sides.

2- Let's call the angle \alpha. To calculate it , you can divide the triangle into two equal right triangles and the angle \alpha will be divided into two equal parts too. Therefore, you can calculate the half of the angle and then multiply it by two, as following:

Sin^{-1}(\alpha 1)=opposite/hypotenuse

Sin^{-1}(\alpha1)=8/2\\  \alpha1=14.47 degrees

\alpha =2\alpha 1\\ 2=2(14.47degrees)\\ \alpha =28.95degrees

The answer is: 28.95degrees

6 0
4 years ago
Find the missing values of the variables
hodyreva [135]

Answer:

What

Step-by-step explanation:

What is the missing variables

7 0
3 years ago
yo can someone please help me out. school is rlly stressful and i just need help. the question is “find the perimeter and area o
Bess [88]
These will be the answers

6 0
3 years ago
Need help,please and thank you
kramer

So a complementary angle is going to equal 90 degrees.

The equation is : x - 10 + 4x - 10 = 90

Then, add together the matching terms : 5x - 20 = 90

Add 20 to both sides : 5x = 110

Then divide both sides by 5 : x = 22

Insert the value 22 into the first equation : (22 - 10) + (4*22 - 10) = 90

Solve : 12 + 78 = 90

Angle UVW = 12 and angle XYZ = 78

8 0
3 years ago
What number will you get the same result if you multiply it by 3 and add 1, OR if you multiply it by 2 and add 8?
Helen [10]

Answer:

7

Step-by-step explanation:

3×7+1=22

2×7+8=22

6 0
3 years ago
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