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2 years ago

Please answer I’ll make brainliest

Mathematics

2 answers:

Gnesinka [82]2 years ago

7 0

Answer:

The lengths that represent the legs of tri ABC are AC and BC

Step-by-step explanation:

AB is the hypotenuse as it is the side opposite to 90°

Yuliya22 [10]2 years ago

5 0

Answer:

Step-by-step explanation:

AC and BC are legs of the right triangle ABC

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Solve the system of linear equations for x and y.(cos θ)x + (sin θ)y=1(−sin θ)x + (cos θ)y = 0x=y=

lys-0071 [83]

Answer:

$\bold{x =cos\theta}\\\bold{y=sin\theta}$

Step-by-step explanation:

The given system of linear equations is:

$(cos\theta)x+(sin\theta)y=1\\(-sin\theta)x+(cos\theta)y=0$

We have to solve the equations for the values of $x, y$ .

Let us use elimination method in which we eliminate one of the variables from the two variables.

For this, let us multiply the first equation by $sin\theta$ and second equation by $cos\theta$

Now, the equations become:

$(cos\theta.sin\theta)x+(sin\theta.sin\theta)y=sin\theta\\\Rightarrow (cos\theta.sin\theta)x+(sin^2\theta)y=sin\theta ....... (1)\\\\(-sin\theta.cos\theta)x+(cos\theta.cos\theta)y=0\\\Rightarrow (-sin\theta.cos\theta)x+(cos^2\theta)y=0 ..... (2)$

Now, let us add (1) and (2):

$(sin^2\theta)y+(cos^2\theta)y=sin\theta\\\Rightarrow (sin^2\theta+cos^2\theta)y=sin\theta\\\Rightarrow (1)y=sin\theta\\\Rightarrow y = sin\theta$

Using the equation:

$(-sin\theta)x+(cos\theta)y=0$

Putting value of $y$ :

$\Rightarrow (-sin\theta)x+(cos\theta)sin\theta=0\\\Rightarrow (sin\theta)x=(cos\theta)sin\theta\\\Rightarrow x = cos\theta$

So, the answer to the system of linear equations is:

$\bold{x =cos\theta}\\\bold{y=sin\theta}$

7 0

2 years ago

Does 6(3-5w)=5(4-2w)-20w have one solution, no solution, or infinitely many solutions?

dem82 [27]

Answer:

infinite

Step-by-step explanation:

trust me I would know im a smart man in college

7 0

3 years ago

1,3,5,7,9, ...? please tell me here the answer here please

exis [7]

Answer:

Step-by-step explanation:

1 + 2 = 3

3 + 2 = 5

5 + 2 = 7

7 + 2 = 9

9 + 2 = 11

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2 years ago

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Irina18 [472]

2 times inscribe angle

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3 years ago

Best buy 1 apple for $0.19 or 3 apple for $0.59?

labwork [276]

Buying 2 apple for $0.19 is better

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3 years ago

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