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
Andreyy89
2 years ago
13

Please help me with this trigonometry question. Brainliest available.

Mathematics
1 answer:
faltersainse [42]2 years ago
5 0
Considering the angle a by cosine rule
11^2 =7 ^2 +15^2 - 2(7)(15)cos(a)
When you do the maths,
Cos(a) =153/210 =0.729
a= cos inverse of 0.729
a=43 degrees


Considering angle b
7^2=15^2 +11^2 -2(11)(15) cos(b)
This will result in cos(b) =297/330=0.9
b= cos inverse of 0.9 = 25.8 degrees


Considering angle c
15^2=7^2 +11^2 - 2(11)(7) cos(c)
Cos(c) will be = -55/154 = -0.357
c= cos inverse of -0.357=110.9

Comparing the angles a,b and c,
C is the largest size in the triangle with an angle of 110.9 degrees

Am I right please ??
You might be interested in
Which of the following is a common multiple of 4 and 10?<br> A 100<br> B 104<br> C 90<br> D 110
Nata [24]
A 4x25=100 10x10=100 making 100 a common multiple of 4 and 10.
3 0
2 years ago
Read 2 more answers
Alex swims 20 minutes per day for exercise. The total
sveticcg [70]

Answer:

e total number of minutes, m.

Step-by-step explanation:

The dependent variable is the variable in which the variable cannot stand by itself.

In this situation, the total number of minutes, m, equal 20 times the number of d.

m = 20d

d, is a variable which can be multiplied which states that it has a value, no matter what. On the other hand, m, requires d, to be there in order to have a value.

The answer is, m, the total number of minutes.

Step-by-step explanation:

5 0
3 years ago
Jamie uses ribbon to make hair ties. The length of the ribbon Jamie uses is represented in the line plot. What is the difference
devlian [24]

Answer:

1) 1 1/8

Step-by-step explanation:

One of the shortest ribbons is 3/8 long, and one of the longest is 1 1/2 long. 1 1/2 minus 3/8 is equal to 1 1/8, because 1 1/2 is equal to 1 4/8, and subtracting 3/8 from that gives us 1 1/8.

5 0
3 years ago
Paula has sold 256 worth of items for the fundraiser. she has sold 32 more than Steve. how much has Steve sold​
Vinil7 [7]

answer=288

you add 256 into 32 to get 288 so then you get 288

(I think)

8 0
3 years ago
What is the value of k in this equation??plz help​
lord [1]

Answer:

k=10×5

k=50 is the answer

8 0
3 years ago
Read 2 more answers
Other questions:
  • How could you rewrite (-3 + 5) + 8 + (-1)
    9·1 answer
  • What is the domain and range of the function graphed??
    5·1 answer
  • Colin drew the floor plan of his bedroom shown below. What is the area of his bedroom in square feet?
    11·2 answers
  • Can someone please help me on this I don't understand it
    6·1 answer
  • 20 points and Brainliest !
    14·2 answers
  • Last year, Nahla opened an investment account with $5400. At the end of the year, the amount in the account had increased by 7.5
    5·1 answer
  • A one-year membership to Metro Gym costs $460. There is a fee of $40 when you join, and the rest is paid monthly. Write an equat
    14·1 answer
  • Change 10 m/s in km/h
    10·2 answers
  • What is 38475 x 304944 ? My teacher won't let me use a calculator!
    15·1 answer
  • The directions are with the pic below. I have to send a 2nd pic. Couldn’t fit everything on the page
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!