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2 years ago

Help me please. This is my last question

Mathematics

1 answer:

Crazy boy [7]2 years ago

3 0

Answer: D. 44

Step-by-step explanation:

Here, we need to know the concept of trigonometry.

Sine (sin) = Opposite/Hypotenuse = O/H
Cosine (cos) = Adjacent/Hypotenuse = A/H
Tangent (tan) = Oppostie/Adjacent = O/A

-----------------------------------------------------------------------------

Given

- The adjacent side of angle x and the hypotenuse.

- We are going to use Cosine.

<u>Solve</u>

cos (x) = 15/21

x = cos⁻¹ (15/21)

x ≈ 44

Hope this helps!! :)

Please let me know if you have any questions

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The vertices of ΔRST are R(–1,–1), S(–1,11) and T(4,11). Which could be the side lengths of a triangle that is similar but not c

Step2247 [10]

The side lengths could be 10, 24 and 26 units.

We must first find the side lengths. We use the distance formula to do this.

For RT:
$d=\sqrt{(11--1)^2+(-1--1)^2}
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For ST:
$d=\sqrt{(11-11)^2+(4--1)^2}
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For TR:
$d=\sqrt{(11--1)^2+(4--1)^2}
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Our side lengths, from least to greatest, are 5, 12 and 13.

To be similar but not congruent, the side lengths must have the same ratio between corresponding sides but not be the same length. 10, 24 and 26 are all 2x the original side lengths, so this works.

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3 years ago

If someone could help me with this that would be great!!! TYSM

likoan [24]

Answer:

1005 ft squared (B)

Step-by-step explanation:

The far left area:

30*15=450

The middle area:

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The last side:

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15*30*1/2=225

Add the area together:

450+330+225=1005

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