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
ELEN [110]
3 years ago
9

Complete the identity. cos (alpha - beta)/cos alpha cos beta = ?

Mathematics
2 answers:
Zepler [3.9K]3 years ago
5 0
\frac{cos(a-b)}{cos(a)cos(b)} =  \frac{cos(a)cos(b)+sin(a)sin(b)}{cos(a)cos(b)} = 1+ \frac{sin(a)sin(b)}{cos(a)cos(b)} =1+tan(a)tan(b)

Note that I used these identities :cos(a-b)=cos(a)cos(b)+sin(a)sin(b) and  tan(a)= \frac{sin(a)}{cos(a)}
MrRa [10]3 years ago
3 0
I belive the answer to be b
You might be interested in
HELP ASAP I NEED THIS TODAY ONLY I WILL MARK BRAINLIEST
Serjik [45]

Answer:

Step-by-step explanation:

1a. 14

1b. it's positive

2. If we were to just go with an estimation, i would say anywhere between 50-60, but I'm going with 50

4 0
3 years ago
Need help plss hurry last day
Valentin [98]

Answer:

Write 21 in the soup column and 25 in the peanut butter column.

Explanation:

The ratio of cans of soup to jars of peanut butter was 7:5

If the jars of peanut butter were 15, then the cans of soup would be (7/5 × 15) = 21

If the cans of soup were 35, then the jars of peanut butter would be (5/7 × 35) = 25

3 0
3 years ago
Pls I need help it’s for 15 points?
Feliz [49]

Answer:

1.97 ounces

Step-by-step explanation:

To find the difference between the heaviest and lightest lime. Subtract both of them and then get your awnser.

4.82 - 2.85 = 1.97 ounces

7 0
3 years ago
kevin and his father have collected 1,456 different coins over the years they have a coin album that holds 30 coins on a page if
Tems11 [23]
To get the answer, divide 1456 by 30
1456 / 30 = 48.53

Because there is leftover coins that cant fit a complete page, they would need one more page.
48 + 1 = 49

Kevin and his dad would need 49 pages to put all thr coins in the album.
3 0
3 years ago
a coin is flipped 5 times. we then observe the number of times a coin lands on heads. what is the compliment of the event "at le
tamaranim1 [39]
If at least one has to be heads then it would be 1/5
3 0
3 years ago
Other questions:
  • Write an equation for the quotient of a number and -12
    13·1 answer
  • A student's PID (personal identification number) is a sequence of six digits. How many different PID numbers are possible?
    5·1 answer
  • What falls in winter but never gets hurt?
    10·2 answers
  • Andy's weight is 5 kilograms less than twice his brother's. Together they weigh 100 kilograms. What are their weights?
    13·1 answer
  • Solve 3z divided by 2=9
    13·2 answers
  • Solve the following system of equations by the substitution method.
    13·1 answer
  • A 4-pack of frappuccino’s costs $10.88 how much does each individual can cost
    15·1 answer
  • 3c - 4 = 14 solve the equation​
    5·1 answer
  • What graph would y^2-4x-2y-2 be? A circle, ellipse, parabola, or hyperbola?
    14·1 answer
  • If 4 wands are equivalent to 6 rands and 24 rands are equivalent to 8 fands, how many wands are equivalent to 5 fands?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!