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Sladkaya [172]
2 years ago
7

If tan x =8/15 and 0°<x<90°,find the value of cos x​

Mathematics
1 answer:
Shtirlitz [24]2 years ago
6 0

9514 1404 393

Answer:

  15/17

Step-by-step explanation:

cos(arctan(8/15)) = 15/17

__

You could assume the ratio values 8 and 15 represent the opposite and adjacent sides of a right triangle. Then the hypotenuse is ...

  h = √(8² +15²) = √289 = 17

The cosine is the ratio of the adjacent side to the hypotenuse, so is ...

  cos(x) = 15/17

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Can someone please help me I don’t know if you got to have to add 4 numbers or 2 numbers
Ghella [55]

Answer:

12 feet.

Step-by-step explanation:

You have to add 4 numbers.

The perimeter is the whole distance around the rectangle

= 2*4 + 2*2

= 8 + 4

= 12 feet.

3 0
3 years ago
Evaluate <br> 3^-3*3^4*3*3^-5
miss Akunina [59]
To multiply exponents with like bases, simply add the exponents...

3^-3 × 3^4 × 3 × 3^-5 =

add exponents across, remember just 3 means 3^1.

-3 + 4 + 1 + -5 = -3

answer is 3^-3
8 0
3 years ago
Un paese contava 12000 abitanti all'inizio del 2007 durante l'anno i nati sono 1,7 % del totale degli abitanti e morti sono 2% c
grandymaker [24]

Step-by-step explanation:

12000 abitanti all'inizio del 2007

nati: 1.7% × 12000 = 204

morti: 2% × 12000 = 240

popolazione all'inizio del 2008: 12000 + 204 - 240 = 11964

6 0
2 years ago
Alicia has invented a new app that two companies are interested in purchasing for a 2-year contract. Company A is offering $10,0
Fantom [35]

Answer:

Month 8

In this month Company B's plan will pay $64,000 versus $45,000 from Company A.

Step-by-step explanation:

Start by calculating the monthly payments for both plans.

Month - Company A - Company B

1      $10,000        $500

2      $15,000       $1,000

3      $20,000       $2,000

4      $25,000       $4,000

5      $30,000       $8,000

6      $35,000       $16,000

7      $40,000      $32,000

8      $45,000      $64,000

9      $50,000     $128,000

10      $55,000     $256,000

11 $60,000 $512,000

12 $65,000 $1,024,000

13 $70,000 $2,048,000

14 $75,000 $4,096,000

15 $80,000 $8,192,000

16 $85,000 $16,384,000

17 $90,000 $32,768,000

18 $95,000 $65,536,000

19 $100,000 $131,072,000

20 $105,000 $262,144,000

21 $110,000 $524,288,000

22 $115,000 $1,048,576,000

23 $120,000 $2,097,152,000

24 $125,000 $4,194,304,000


7 0
3 years ago
Read 2 more answers
Find the first, fourth, and eighth terms of the sequence. A(n) = –5 • 3n–1
jeka94

Answer:

<h2>C. -5; -135, -10,935</h2>

Step-by-step explanation:

\text{Substitute}\ n=1,\ n=4\ \text{and}\ n=8\ \text{to}\ A(n)=-5\cdot3^{n-1}:\\\\A(1)=-5\cdot3^{1-1}=-5\cdot3^0=-5\cdot1=-5\\\\A(4)=-5\cdot3^{4-1}=-5\cdot3^3=-5\cdot27=-135\\\\A(8)=-5\cdot3^{8-1}=-5\cdot3^7=-5\cdot2,187=-10,935

6 0
2 years ago
Read 2 more answers
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