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taurus [48]
2 years ago
6

Find the cosine 315º. Round your answers to the nearest hundredth if necessary. 0 0.71 1 –0.78

Mathematics
2 answers:
Fofino [41]2 years ago
7 0
Cos 315° is about 0.71.
DerKrebs [107]2 years ago
3 0

Answer:

Cos(315) = 0.711.

Step-by-step explanation:

Given : cosine 315º.

To find : Round your answers to the nearest hundredth.

Solution : We have given that cosine 315º.

Cos x = Sin (90- x).

Then

Cos ( 315) = Sin(90 -315)

Cos(315) = Sin (-225)

By the property Sin(-x) = -Sin(x)

Cos(315) = -Sin (225)

Cos (315) = \frac{\sqrt{2}}{2}

Cos(315) = 0.70711.

Therefore,Cos(315) = 0.711.

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If y varies directly with x, the constant of variation is . The equation representing this relationship is . What is the value o
Julli [10]

Answer:

Y~x

Y = k × v

Y = 22

Step-by-step explanation:

Y~ x

Y = k × X

Since the question isn't complete,we are going to assign figures to complete this very question and move on to other things and you can as well solve questions that are similar to this ones.

Now let's assume that the question says that is 6 when x is 3,what is y when x is 11.

To solve this question above,we need to find the constant of variation which will then enable us to know what y is when x is 11

Y~ x

Y = k × V

When y is 6 and x is 3,k will be

6 = 3k

K= 2

Now when k is 2,x is 11,y Will then be

Y = kx

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Y = 22.

With this procedure,one can find any value of x or y when they have the constant of variation.

If you have a figure assigned to x and y is to be found,the constant of variation will help to get y and vice versa

8 0
2 years ago
Benito wrote the equations shown about the figure. Explain Benito’s errors.
Minchanka [31]

Answer:

  • Benito's error was using the equal sign (=) instead of the congruency symbol (≅).

Explanation:

Benito's error was using the equal sign (=) instead of the congruency symbol (≅).

The congruency symbol (≅) means that the elements (segments, angles or figures in general) have the same measure, i.e. they have equal lengths for the segments or equal measure for the angles.

For instance, it is an error saying that the segment AB is equal to the segment BC because, as you clearly see in the picture, they are not same; they have the same length but they are joining different points, that makes them different in essence, although they have the same length. They would be equal only if they are the same figure.

In mathematics, you must not say that two different segments or two different angles are equal but they are congruent, which means that their lengths are equal. The use of equal is reserved for numbers and variables, not for figures like segment, points, angles, polygons.

7 0
3 years ago
What is the constant term of -3x^4-7x+2
san4es73 [151]

Answer:

The answer is 2. 2 is the only number that can't change. There is no x or ^.

4 0
3 years ago
Plz help ill give u brainlist
Fed [463]
Angle 1 is a right angle =90 °
so 5x-85=90
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5x=175
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8 0
2 years ago
Find the sum of the sequence 38+39+40+........+117
leva [86]
The answer is 6200
i think
your welcome
6 0
2 years ago
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