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lyudmila [28]
3 years ago
14

How do i properly write out the equation​

Mathematics
1 answer:
omeli [17]3 years ago
7 0
What equation is it??
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Using the triangle pictured, find the measure of side AB. Round your answer to the nearest tenth. A) 1.6 B) 2.2 C) 2.7 D) 3.3
Yuki888 [10]

Answer:

Option B (AB = 2.2 units).

Step-by-step explanation:

The diagram shows that there are two sides given and one angle is given. Therefore, the sine rule must be used to solve the question. The sine rule can be written as:

sin ABC / AC = sin BAC / BC.

Plugging ABC=72 degrees, AC=2.5, and BC=2.1 in the sine rule gives:

sin 72 / 2.5 = sin BAC / 2.1.

Cross multiplying gives:

sin BAC = (2.1*sin 72)/2.5.

sin BAC = 0.79888747368.

Taking sin inverse on both sides gives:

BAC = arcsin (0.79888747368) = 53.0239949 degrees.

To find AB, first, the angle ACB is required. To find that angle, use the triangular law of angles. All the three angles sum up to 180 degrees. Therefore ACB = 180 - 72 - 53.0239949 = 54.9760051  degrees.

Now applying the Sine Rule to find AB:

sin ACB / AB = sin ABC / AC.

sin (54.9760051) / AB = sin 72 / 2.5.

AB = (2.5*sin (54.9760051))/sin (72) = 2.2 (to the nearest tenth).

Therefore, AB = 2.2 units, i.e. Option B!!!

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3 years ago
Adele has 6 sheets of stickers .Bea has 9 sheets of the same stickers.how many stickers do they have altogether?
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They have 15 sheets of stickers all together
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What value of x will make the equation below true?<br> 5x = 12x – 28
mash [69]
X = 4
First take 12x off both sides, so -7x=-28
The negatives cancel out, so 7x=28
Not find the hcf and divide by that.
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Answer:

1233

Step-by-step explanation:

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3 years ago
How do I get the ratio?
MA_775_DIABLO [31]

To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero).

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2 years ago
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