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vodomira [7]
3 years ago
12

What is the value of x

Mathematics
1 answer:
Goshia [24]3 years ago
3 0
Sum of all adjacent angles is 180°.

3x + 12 + x = 180
4x + 12 = 180
4x = 168
x = 42°

-----------------------------------------
Answer: x = 42°
-----------------------------------------
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Sin\theta +cos\theta =1
Mamont248 [21]

Answer:

θ = 2 π n_1 + π/2 for n_1 element Z  or θ = 2 π n_2 for n_2 element Z

Step-by-step explanation:

Solve for θ:

cos(θ) + sin(θ) = 1

cos(θ) + sin(θ) = sqrt(2) (cos(θ)/sqrt(2) + sin(θ)/sqrt(2)) = sqrt(2) (sin(π/4) cos(θ) + cos(π/4) sin(θ)) = sqrt(2) sin(θ + π/4):

sqrt(2) sin(θ + π/4) = 1

Divide both sides by sqrt(2):

sin(θ + π/4) = 1/sqrt(2)

Take the inverse sine of both sides:

θ + π/4 = 2 π n_1 + (3 π)/4 for n_1 element Z

or θ + π/4 = 2 π n_2 + π/4 for n_2 element Z

Subtract π/4 from both sides:

θ = 2 π n_1 + π/2 for n_1 element Z

or θ + π/4 = 2 π n_2 + π/4 for n_2 element Z

Subtract π/4 from both sides:

Answer: θ = 2 π n_1 + π/2 for n_1 element Z

or θ = 2 π n_2 for n_2 element Z

4 0
3 years ago
The Length of the side of the square A is twice the length of side of the square B. What is the ratio of the area square A to th
Nina [5.8K]

Answer:

1:2

Step-by-step explanation:

if the one side is twice the length that means that you need two of them to make the one thus the ratio 1 to 2

4 0
4 years ago
Find the product or type<br> "impossible"<br> [6 ]I-1<br> 1 11<br> (-5<br> -5 3
ValentinkaMS [17]

Answer:

"impossible"

Step-by-step explanation:

I think.  :/

4 0
3 years ago
Read 2 more answers
What is Index Law 2?<br> please give definition
ioda

LAW 2: The second law of indices tells us that when dividing a number with an exponent by the same number with an exponent, we have to subtract the powers. In algebraic form, this rule is as follows . The a represents the number that is divided by itself and m and n represent the powers.

6 0
3 years ago
Read 2 more answers
What is the volume of the cone? Use π ≈ 3.14. 12.56 cubic units 18.84 cubic units 20.93 cubic units 25.12 cubic units
HACTEHA [7]

Answer:

volume of cone = 12.56 cubic units

Step-by-step explanation:

Volume of cone = 1/3  π r² h

            r = 2

            h = 3

then

V= 1/3 3.14 * (2) ² 3

 = 12.56 cubic units

4 0
3 years ago
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