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sammy [17]
3 years ago
6

(Photo attached) Please help with this vector question! There are 5 total, separately posted. Thank you! :)

Mathematics
1 answer:
Mkey [24]3 years ago
5 0
Distance = 110.6
Direction = north of west
Degrees = 105
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I cant solve this can i get some help? <br> 2 cos x + √ 2 = 0
Alexandra [31]

Answer:

Step-by-step explanation:

2 cos x + √ 2 = 0

2 cos x = -√ 2

cos x = -√ 2  / 2

x = arcCos(  -√ 2  / 2 )

so to solve we have to use  "co-terminal " angles .. do you know what I'm saying?  do you understand the words coming out of my mouth :DDDDD OKay back to math and not movie lines .. :P

x = arcCos(  √ 2  / 2 )

x = 45 °

now find the "co terminal" angle that is on 45 ° but in the correct quadrant... since the  -√ 2   is negative.. we now that we go down the y axis.. but also positive on the x axis.. soooo.. that put the angle in the 4th quadrant... so this is an angle of 315° if we go in the CCW  ( counter clock wise )  direction but it's also -45°  in the CW  (clock wise )  direction

below is the table to remember the trig special angles

notice how it's  1,2,3,4    .. so it's super easy to remember.. the trig books don't show you this "trick"   :P

copy and paste this to your computer some where handy

Sin(0) = 0/2      =0  

Sin(30)= \sqrt{1}/2   = 1/2  

Sing(45) =\sqrt{2}/2 =\sqrt{2}/2  

Sin(60)=\sqrt{3}/2   = \sqrt{3}/2  

Sin(90)=\sqrt{4}/2   = 1  

Cos is exactly the same but counts backwards from 90°

Cos(90) = 0/2       = 0

Cos(60) = \sqrt{1} /2   = 1/2

Cos(45) = \sqrt{2}/2    =\sqrt{2}/2

Cos(30) = \sqrt{3}/2   =\sqrt{3}/2

Cos(0) = \sqrt{4}/2    = 1

8 0
3 years ago
Please Help I Will Mark Brainly.
Evgesh-ka [11]

Answer:

13

-1

675

3

Step-by-step explanation:


8 0
3 years ago
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A​ painting, including the​ frame, measures 75 cm by 93 cm. ​a) How many centimeters of framing were needed to frame the​ painti
geniusboy [140]

Answer:

A. 6975 cm, B. 69750 mm

Step-by-step explanation:

3 0
3 years ago
The equation of a line is y = -4x + 10<br> What is the y-intercept of the line
Vikentia [17]

Answer:

10

Step-by-step explanation:

the formula y = mx +c

the y is obviously, y.

m, also means the gradient has a value of -4

c is the y-intercept, so the value of c is 10.

4 0
2 years ago
Which number below has a value between 6.6 and 6.7?
goblinko [34]

Answer:

C. =6.633

Step-by-step explanation:

4 0
3 years ago
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