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grigory [225]
3 years ago
7

0 is in quadrant III and cos^2 0=1/4

Mathematics
1 answer:
Jlenok [28]3 years ago
5 0

Answer:

θ = 240

and

cos(θ) = -0.5

Step-by-step explanation:

Theta is in the third quadrant, that meansit goes from 180 to 270 degrees

Then,

cos^2 (θ) =1/4

cos (θ) = ± 1/2

θ = arccos(0.5)

θ = 60

But in the third quadrant

θ = 180 + 60  = 240

θ = 240

and

cos(θ) = -0.5

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The quotient of a number divided by 6 is 30 .What is the number
Greeley [361]

Answer:

180

Step-by-step explanation:

Let the quotient be X

X/6= 30

cross multiply;

X=30×6=180

8 0
3 years ago
The legs of a isosceles triangle are 0.3 foot less then twice the base . The perimeter of the triangle is 4.9 feet .
kicyunya [14]
<h2>Greetings!</h2>

Answer:

The legs are 1.9 feet long

And the base is 1.1 feet long.

Step-by-step explanation:

Firstly, you need to find the value of x.

You need to add all the sides together:

2x - 0.3 + 2x - 0.3 + x

Simplified =

5x - 0.6

And this equals 4.9:

5x - 0.6 = 4.9

Next, you need to move the -0.6 over to the other side, making sure to make it a positive:

5x = 4.9 + 0.6

5x = 5.5

Now divide each side by 5:

\frac{5x}{5} = \frac{5.5}{5}

x = 1.1


As the image is unclear of what side you are finding the length of:

2x - 0.3 = 1.9 feet long

And the base is 1.1 feet long.


<h2>Hope this helps!</h2>
4 0
3 years ago
Read 2 more answers
3x+5y-4=0<br> what is the slope and y-intercept?
zaharov [31]

Answer:

3x + 5y - 4 = 0 \\ 3x + 5y = 4 \\ 5y = 4 - 3x \\ y =  \frac{4}{5}  -  \frac{3}{5} x \\ y = mx + c \\ slope = m =  \frac{ - 3}{5}  \\ y \: intersept = c =  \frac{4}{5}  \\ thank \: you

5 0
2 years ago
0.234+2.07 hurrry plz
andreyandreev [35.5K]

Answer:

2.304

Step-by-step explanation:

Add 0.234 and 2.07 left to right with 0.234 on the top and 2.07 on the bottom.

8 0
3 years ago
Look at this shape : which image shows a rotation?
Luba_88 [7]

Answer:

Option C

Step-by-step explanation:

8 0
3 years ago
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