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anyanavicka [17]

3 years ago

11

Trigonometry is the worst please someone answer this for me ... no links please

1 answer:

quester [9]3 years ago

5 0

Answer: Approximately 22.62 degrees

===============================================

Work Shown:

cos(angle) = adjacent/hypotenuse

cos(y) = 12/13

y = arccos(12/13)

y = 22.6198649

y = 22.62

Notes:

Arccosine is the same as inverse cosine. On your calculator there should be a button labeled $\cos^{-1}$
Make sure your calculator is in degree mode
The decimal result for y, shown above, is approximate. I rounded to two decimal places to show the final answer. Round however you need to if your teacher instructs otherwise.

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(a-b) ( a+b) simplify

BlackZzzverrR [31]

Answer:

$a^2 - b^2$

Step-by-step explanation:

1. $(a)(a)+(a)(b)+(-b)(a)+(-b)(b)$

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3. $a^2 - b^2$

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omeli [17]

1st option is the answer

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Anettt [7]

Answer:

Mean : 16

Median: 15.5

Mode: 16

Step-by-step explanation:

<u><em>Given/To Find:</em></u>

<em>Find the mean, median, mode for the following data:</em>

<em>10, 10, 12, 13, 13, 14, 15, 16, 16, 16, 18, 22, 23, 26</em>

<u><em>Solve:</em></u>

<em>Mean: Average</em>

<em>Formula: Adding all number in data then divide by the total number in data.</em>

<em>10 + 10 + 12 + 13 + 13 + 14 + 15 + 16 + 16 + 16 + 18 + 22 + 23 + 26 = 224</em>

<em>224/14 = 16</em>

<em>Median: Middle Number</em>

<em>Formula: Number in the middle</em>

<em>10,</em><em> 10, 12, 13, 13, 14, 15, 16, 16, 16, 18, 22, 23,</em><em> 26</em>

<em>10, 10,</em><em> 12, 13, 13, 14, 15, 16, 16, 16, 18, 22, </em><em>23, 26</em>

<em>10, 10, 12,</em><em> 13, 13, 14, 15, 16, 16, 16, 18, </em><em>22, 23, 26</em>

<em>10, 10, 12, 13,</em><em> 13, 14, 15, 16, 16, 16, </em><em>18, 22, 23, 26</em>

<em>10, 10, 12, 13, 13, </em><em>14, 15, 16, 16, </em><em>16, 18, 22, 23, 26</em>

<em>10, 10, 12, 13, 13, 14, </em><em>15, 16, </em><em>16, 16, 18, 22, 23, 26</em>

<em>15 + 16 = 31</em>

<em>31/2 = 15.5</em>

<em>Mode: Most often number: 16</em>

<u><em>Kavinsky</em></u>

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galina1969 [7]

Answer:

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bonufazy [111]

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3 years ago