1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yawa3891 [41]
2 years ago
8

Prove cos a = 5/13 pls solve it and no link pls..........​

Mathematics
1 answer:
Scorpion4ik [409]2 years ago
3 0

<u>Answer</u> : The demonstration is below :)

Step-by-step explanation :

<u>We use Pythagoras' </u><u>theorem </u><u>:</u>

  • In the triangle ABC we have :

AB² = AC² - BC² = 15² - 9² = 144 = 12²

  • In the triangle ABD we have :

DB² = AD² - AB² = 13² - 12² = 5²

cos(a) = BD/AD = 5/13

You might be interested in
Write the fraction as a decimal.<br> Round to the nearest thousandth.<br> 7<br> 22
sveticcg [70]

Answer:

0.318

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What are the slope and the y-intercept of the linear function that is represented by the equation y=-10x+1
RUDIKE [14]
<h3>Answer:</h3>

The slope is -10 and the y-intercept is 1.

<h3>Explanation:</h3>

This function is written in slope-intercept form, which is y=mx+b.  In this form, m is the slope and b is the y-intercept.

In this case, m=-10 and b=1, so those are the answers to this problem.

6 0
3 years ago
Read 2 more answers
4 to the seventh power over 5 squared all raised to the third power
Komok [63]

(4^7 / 5^2)^3

= 4^21 / 5^6

Answer

4^21 / 5^6

3 0
3 years ago
Read 2 more answers
Im so lost what the answer is
Rainbow [258]

Answer:

Unfortunately, we can't do anything with 41 as it has no factors. Since 3\sqrt{41} is already simplified, try submitting that as your answer. If that doesn't work then try un-doing their steps and get rid of the 3:

3\sqrt{41}

\sqrt{41(9)}

\sqrt{369}

Hope this helps!

5 0
2 years ago
59.99 shoes, 15% markup
Morgarella [4.7K]
68.99
First find what one percent is. Then multiply it by 15 (your markup). Then add it to your original price.

5 0
3 years ago
Other questions:
  • Can you give an example of equations when you are given the constant of proportionality?
    15·1 answer
  • Find the value of x to the nearest thenth<br> A)5.7<br> B)8.2<br> C)4.7<br> D)7
    10·1 answer
  • The rectangles garden is 25ft by 15ft what is the area of the garden ?
    10·1 answer
  • 1 Point
    13·1 answer
  • Base ten numeral<br><br> What is Two and four hundred fifty eight thousandths?
    13·2 answers
  • Y= 3x+6; (4,7) in slop intercept form
    8·1 answer
  • What is 3/4 of 4/5= ​
    7·1 answer
  • Write an expression equivalent to b^10/b^5 in the form b^m.
    5·1 answer
  • Help me I’m begging pls
    15·1 answer
  • Find the measurement of segment WY. Assume that each figure is not drawn to scale. Express your answer as a decimal and do NOT i
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!