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
Nimfa-mama [501]
4 years ago
15

If cota=5/12 evaluate 2sina-3cosa/4sina-9cosa

Mathematics
2 answers:
lozanna [386]4 years ago
7 0
Cot=cos/son
Cot(a)=cos(a) / sin(a)
Cos(a)=5
Sin(a)=12

2sina-3cosa / 4sina-9cosa
2(12)-3(5) / 4(12)-9(5)
24-15 / 48-45
9/3
3
ivanzaharov [21]4 years ago
7 0

Answer:

3.

Step-by-step explanation:

We have a triangle where opposite side = 12 , adjacent side = 5 and hypotenuse =  √(12^2 + 5^2) = 13   (because cot a = adjacent/ opposite side).

So  2sina - 3cosa / 4sina - 9cosa

= (2 * 12/13 - 3 * 5/13) / ( 4 * 12/13 - 9 * 5/13)

= (24/13 - 15/13) / (48/13 - 45/13)

=  9/13 / 3/13

= 9/13 * 13/3

= 3.

You might be interested in
ILL MARK BRAINLIEST!
Gre4nikov [31]

Answer:

Median

Step-by-step explanation:

Center of distribution is the middle of a distribution, much like the median. The median of a set of numbers is the number in the middle. Since these two are pretty similar, median would be the best to describe the centers of distribution out of the terms provided.

Edit: I'm leaning towards B.) Both aren't symmetrical

6 0
3 years ago
Hello everyone, i am very confused by this question:
Lesechka [4]

Answer:

Read the explanation down

Step-by-step explanation:

This is a linear equation, because the equation does not have any exponents. Graph it by putting the equation into either slope-intercept form y=mx+b or point-slope form y−y1=m(x−x1).

Isolate y by first adding 6x to each side:

9y=6x−18

Divide each side by 9:

y=23x−2

Now graph the line y=23x−2 by first plotting the y intercept at (0,−2), then connecting points with a slope of 23.

graph{2/3x-2 [-10, 10, -5, 5]}

8 0
3 years ago
Find the median of the set of data this box-and-whisker plot represents.
egoroff_w [7]

Answer:

18 I think

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find x in the parallelogram OA =(X+23) IN ; OC=31 in
ddd [48]
82 Europe dduuxhxxhhchcch
3 0
3 years ago
How can an expression using the distributive property can be simplified to 12a + 18b - 6c
elena-s [515]
Look for a common number in all the terms

6(2a+3b-c)
3 0
4 years ago
Other questions:
  • Anyone wanna help with this short chart right quick
    5·1 answer
  • Listed below are the amounts​ (dollars) it costs for marriage proposal packages at different baseball stadiums. Find the​ range,
    13·1 answer
  • Want points answer me question
    5·1 answer
  • Plzz help if you can.. i'm confused
    10·1 answer
  • What is the magnitude of an earthquake that is 10,000 times more intense than a standard earthquake?
    12·1 answer
  • Robert gets a loan from his bank.
    8·1 answer
  • I need some help! Will give brainliest!!!
    7·1 answer
  • The area of the rectangle on the bottom of this stack is 6 cm2 and the height of the stack is 3 cm. What is the volume of this r
    5·1 answer
  • Write a linear equation for a line that passes through (0, 0) and m = -2.
    8·1 answer
  • All 136 students in the Math Club went on a field trip. Some students rode in vans which hold 8
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!