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k0ka [10]
3 years ago
14

Помогите решить, пожалуйста, с 1-8. Дам 50 баллов.​

Mathematics
1 answer:
kifflom [539]3 years ago
5 0

Answer:

Step-by-step explanation:

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In right triangle ABC, if angle A is 90 degrees, angle C is 34 degrees, and AC is 71.4, find BC.
AURORKA [14]

We are given that

In right triangle ABC, if angle A is 90 degrees, angle C is 34 degrees, and AC is 71.4, find BC.

Solution

We will first draw a diagram to illustrate the information

Above we want to find x

The method to use is SOHCAH

From the right angle triangle above we have above, we have the adjacent side and we want to find the hypotenus, so we use cosine

i.e

\cos 34=\frac{71.4}{x}

We need to solve for x here

\begin{gathered} x=\frac{71.4}{\cos 34} \\ x=86.12396152 \\ x=86.1\text{ (to the nearest tenth)} \end{gathered}

Thus, |BC| = 86.1 (to the nearest tenth

8 0
1 year ago
Please answer this question.
lesantik [10]

Answer:

aₙ = aₙ₋₁ + n + 1

Step-by-step explanation:

a₁ = 2

a₂ = 2 + 2 + 1 = 5

a₃ = 5 + 3 + 1 = 9

a₄ = 9 + 4 + 1 = 14

a₅ = 14 + 5 + 1 = 20

4 0
3 years ago
The perimeter of a basketball court is 9696 meters and the length is 6 meters longer than twice the width. what are the length a
irina1246 [14]
P=2(l+w) = 9696
-> l+w= 9696/2= 4848
l=6+2w
6+2w+w=4848
6+3w=4848
3w=4842
w=1614
l=6+2w = 6+2x1614= 3234

6 0
4 years ago
How are the angles on an epuailateral from triangle related
koban [17]
The sum of the 3 angles in a triangle is 180 , from the name you can know that it will have 3 equal angles which will be 60 degrees each as 180÷3=60
6 0
3 years ago
Martin charges $15 for every 5 bags of leaves he rakes. Last weekend, he raked 26 bags of leaves. How much money did he earn
son4ous [18]
$78 is what he earned.  15/5=3.  3*26=78
7 0
3 years ago
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