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Reika [66]
3 years ago
13

What's the Pythagorean Theorem?

Mathematics
1 answer:
Lady_Fox [76]3 years ago
5 0

Answer:

The pythagorean theorem is a^2 + b^2 = c^2

Step-by-step explanation:

Not sure what you're asking! Sorry! :)

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15x – 7 = 4x – 18<br> What is x
Triss [41]

Answer:

x = - 1

Step-by-step explanation:

Given

15x - 7 = 4x - 18 ( subtract 4x from both sides )

11x - 7 = - 18 ( add 7 to both sides )

11x = - 11 ( divide both sides by 11 )

x = - 1

3 0
3 years ago
I need help<br> someone pls
Alborosie

Answer:

≈ 66.5 m

Step-by-step explanation:

Using the sine ratio in the right triangle

sin12° = \frac{opposite}{hypotenuse} = \frac{d}{320} ( multiply both sides by 320 )

320 × sin12° = d , then

d ≈ 66.5 m ( to 1 dec. place )

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4 years ago
You might need: CalculatorThe angle O, is located in Quadrant III, and sin((.)1213What is the value of cos((,)?Express your answ
Wewaii [24]

We know that:

\sin (\theta_1)=-\frac{12}{13}

There is also an interesting property that relates the sine and the cosine of an angle:

\sin ^2(\theta_1)+\cos ^2(\theta_1)=1

We can find the cosine of theta using this equation:

\begin{gathered} \cos ^2(\theta_1)=1-\sin ^2(\theta_1) \\ \cos (\theta_1)=\sqrt{1-\sin^2(\theta_1)} \\ \cos (\theta_1)=\sqrt[]{1-(-\frac{12}{13})^2} \\ \lvert\cos (\theta_1)\rvert=\sqrt[]{1-\frac{144}{169}}=\sqrt[]{\frac{25}{169}} \\ \lvert\cos (\theta_1)\rvert=\frac{5}{13} \end{gathered}

Since theta is in the third quadrant then its cosine must be a negative number so:

\cos (\theta_1)=-\frac{5}{13}

3 0
1 year ago
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