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
qwelly [4]
3 years ago
11

Suppose sin a = 12/13 and sin b= 5/11. FInd cos(a+b)

Mathematics
1 answer:
m_a_m_a [10]3 years ago
6 0

Answer:

1.28 or 912/715

Step-by-step explanation:

sine= opposite side/hypotenuse

cos=adjacent/ hypotenuse

sine a= 12/13 using the Pythagorean Theorem and solve for the missing side. (which is the adjacent side)

cos a = 5/13

Do the same for sine b

cos b= 9.8/11

add both the cosine value

(5/13)+(9.8/11)=1.28 or 912/715 in fraction form

You might be interested in
Select all the correct answers.
irakobra [83]

Answer:

The ground exerts an equal force on the golf ball and a golf ball striking the ground is a collision

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Write the word form for 3,500.16
Varvara68 [4.7K]
Three thousand five hundred and sixteen hundredths.
6 0
3 years ago
Read 2 more answers
Mini muffins cost $3:00 per dozen Andre says I have $2:00 so I can afford 8 muffins Elena says I want to get 16 muffins so I’ll
jasenka [17]

Answer:

I agree with both.

Step-by-step explanation:

If it's $3 per dozen that would be $0.25 per muffin because

3 ÷ 12 = 0.25

And if Andre has $2 than he can only afford 8 muffins because

0.25 x 8 = 2

And if Elena wants 16 muffins

16 x 0.25 = 4

So she will have to pay $4.

Hope this makes sense and helps!

4 0
3 years ago
If B = { p : p is a factor of 12 } list the elements of this set and find n ( B )​
anastassius [24]

Answer:

B={1,2,3,4,6and12}

n (B) =6

Step-by-step explanation:

<h3>Greetings !</h3>

Factor, in mathematics, a number or algebraic expression that divides another number or expression evenly—i.e., with no remainder. For example, 3 and 6 are factors of 12 because 12 ÷ 3 = 4 exactly and 12 ÷ 6 = 2 exactly. The other factors of 12 are 1, 2, 4, and 12.

Hope it helps!

3 0
2 years ago
If line ML is a midsegment of triangle IJK, find KJ
laila [671]
So what we're dealing with here is a similar triangle situation. Since ML is a midsegment, that means that IL and LJ are congruent. So, IL=LJ=13. This means that the whole side IJ is 26 (13+13=26). We also know that triangle IML and triangle IKJ are similar triangles, so their sides are proportional. This means that we can set up the ratio:
12/13 = x/26
and solve for x.
After multiplying 26 to both sides of the equation, we find that x=24, so KJ=24.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Am 18-foot piece of cotton cloth cost $15.84. What is the price per unit
    10·1 answer
  • 8" × 8" × 3". Which expression will give her the total volume of the pans
    5·1 answer
  • How do I solve for Y when the problem is 10x-5y=15 ?
    8·2 answers
  • Calculate the area of this triangle.<br>14 cm<br>18 cm​
    8·1 answer
  • What is 200 x 200? <br><br> im so stupid...
    6·2 answers
  • PLEASE ASAP HELP WITH LETTER f
    12·1 answer
  • PLEASE HELP .!!! ILL GIVE BRAINLIEST.. *EXRTA POINTS* .. DONT SKIP :(( ! <br> ILL GIVE 40 POINTS .
    7·2 answers
  • What is the equation of the line that has a slope of 2 and passes through the point (2,9)?
    7·1 answer
  • A cyclist travels 12 miles in 45 minutes. <br> What is his average speed in mph?
    5·2 answers
  • Camila invests money in an account paying a simple interest of 3.4% per year. If she invests $50 and no money will be added or r
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!