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2 years ago

Lucy started the proof of the law of cosines using triangle WXY as shown.

1 answer:

3 0

The step which contains the first error in calculation is: B. Step 2 - the sine ratio was applied incorrectly.

<h3>What is the law of sines?</h3>

The law of sines is also referred to as sine law or sine rule and it can be defined as an equation that relates the side lengths of a triangle to the sines of its angles.

Mathematically, the law of sines is given by this equation:

$\frac{sinA}{a} =\frac{sinB}{b}$

For any right-angled triangle, the ratio of the length of its opposite sides to the length of its hypotenuse is generally referred to as sine ratio. Thus, sine ratio is given by this formula:

cos(θ) = Opp/Hyp

<u>Where:</u>

Opp is the opposite side of a right-angled triangle.

Hyp is the hypotenuse of a right-angled triangle.

θ is the angle.

In this context, we can infer and logically deduce that the step which contains the first error in calculation is step 2:

sin(W) = y/XZ; XZsin(W) = y.

In conclusion, the correct step should have been written as follows:

sin(W) = XZ/y; ysin(W) = XZ.

Read more on law of sines here: brainly.com/question/27868305

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Anuta_ua [19.1K]

Step-by-step explanation:

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This means that my hypothesis at the beginning was correct, more of m/s means KE will increase proportionally because they are all linear. I found it surprising when the bean bag height went over the water bottle drop mark.

4. To conclude, my hypothesis matched my data. The data values went up when more mass or speed was added. This means if I were in a situation where I needed more kinetic energy for something, I would know to increase mass or the speed of the object giving it energy.

The reason that this hypothesis is correct is when you have more mass, you have more energy. So, when you drop let's say a baseball, it isn’t that heavy so it would only launch the bean bag so far. But a bowling ball is very heavy and has lots of energy when falling because of that, it would make the bean bag go very high.

To make this experiment better, I would use a smoother material for the lever so energy wouldn’t be lost by friction from wood rubbing together. Also, maybe a scanner or video camera to more accurately record how far the bean bag went. All of these would help the lab get more precise results, maybe they could be used in a future lab.

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3 years ago

Read 2 more answers

A bakery uses 8 tablespoons of honey for every 10 cups of flour to make bread dough. Some days they bake bigger batches and some

Tamiku [17]

Your answer: A bakery uses 8 tablespoons of honey for every 10 cups of flour to make bread dough. Some days they bake bigger batches ... brainly.com/question/18026512

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2 years ago

Use the slope formula to determine the slope of a line that passes through the points (4, 9) and (-8, -6).

velikii [3]

Y = mx + c

gradient = -6-9/-8-4
= -15/-12
= 1.2

when x = 4 and y = 9,
9 = 1.2(4) + c
c = 9 - 4.8
= 4.2

The slope of the line is y = 1.2x + 4.2 .

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3 years ago

Como puedo resolver estas funciones y saber su tipo?

myrzilka [38]

Comp outdo resolve y veinte y cinco

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2 years ago

1/2x+3=2/3x+1<br>what's the answer

yan [13]

1/3x+2 or x=1.5 depends on if u have to find x itself

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3 years ago