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
Lorico [155]
4 years ago
13

Anyone help please!!!!

Mathematics
2 answers:
VikaD [51]4 years ago
7 0

cos(a-B)-cos(a+B)
cosucosv - sinusinv = cos(u+v)
cosucosv + sinusinv = cos(u-v)

cos(a-B)-cos(a+ B) = cosa cosB + sina sinB - (cosa cosB - sina sinB)= cosa cosB + sina sinB - cosacosB + sinb sinB= 2 sina sinB
Andre45 [30]4 years ago
6 0
We are to verify the identity:

cos(α-B)-cos(α+B) = 2 sinα sinβ

Left hand side = cos(α - B)-cos(α + B) 

= cosα cosβ + sinα sinB - (cosα cosB - sinα sinβ)

= cosα cosβ + sinα sinB - cosα cosB + sinα sinβ)

= sinα sinβ + sinα sinβ

= 2 sinα sinβ

= Right Hand side
You might be interested in
Show your work (19−7)^( (2) ) −8*3+4*3−5
ArbitrLikvidat [17]

Answer:

Step-by-step explanation:

1 Simplify 19-7 to 12.

12^2−8×3+4×3−5

2 Simplify 12^2 to 144

144−8×3+4×3−5

3 Simplify 8×3 to 24.

144−24+4×3−5

4 Simplify 4×3 to 12.

144−24+12−5

5 Simplify 144-24 to 120.

120+12-5

6 Simplify 120+12 to 132.

132-5

7 Simplify.

127

3 0
2 years ago
A horse-drawn carriage tour company has found that the number of people that take their tour depends on the price charged per cu
prohojiy [21]

Answer: Option B- The horse-drawn carriage tour company can expect to take in $5760 when the charge per customer is $60

6 0
3 years ago
Read 2 more answers
A bag contains 6 red balls and blue balls. 4 balls are selected at random. find the probability of selecting 4 red balls.
masya89 [10]

Another way is to note that there are <span><span>(<span>104</span>)</span><span>(<span>104</span>)</span></span> (“10 choose 4”) ways to select 4 balls from a collection of 10. If 4 of those 10 balls are “special” in some way (in this case, “special” = “red”), then the number of ways to choose 4 special balls is <span><span>(<span>44</span>)</span><span>(<span>44</span>)</span></span>. (The factor of <span><span>(<span>60</span>)</span><span>(<span>60</span>)</span></span> is included to convey that, after choosing 4 special balls, we choose none of the 6 non-special balls.) This line of reasoning gives the second expression.

8 0
3 years ago
Judi's father is 6 feet tall. how many inches is 6 feet tall
kati45 [8]
One feet is equal to 12 inches, so if we multiply 12 x 6 the answer is 72. So 72 inches equal 6 feet. 
4 0
3 years ago
In order to answer the question correctly, please use the following image below:
Marta_Voda [28]

Answer:

70°

Step-by-step explanation:

Minor angle at the centre:

360 - 250 = 110

Two tangents make an angle of 90° each

90 + 90 + 110 + x = 360

x = 360 - 290

x = 70°

5 0
3 years ago
Other questions:
  • Plz help ASAP I’ll give lots of points
    13·1 answer
  • Heeeelp !! please!!!!
    13·1 answer
  • In the first year if ownership, a new car lose 20% of its value. If a car lost $4,200 value in the first year, how much did the
    15·1 answer
  • Joe spent $4.36 for gasoline in driving 68 miles. How much would he spend in driving 85 miles?
    11·1 answer
  • Five less than seven times a number equals the sum of five times the number and one
    12·1 answer
  • For a population with µ = 40 and σ = 8, what is the z-score corresponding to X = 34?
    9·1 answer
  • What is the distance between (-1, 2) and (3, 5)
    8·2 answers
  • (x² y³ z)⁴ simplified
    9·2 answers
  • 4 glue sticks cost $7.76.<br> Which equation would help determine the cost of 13 glue sticks?
    5·1 answer
  • The square of a non-zero number is equal to 70% of the original number. What
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!