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
Arada [10]
3 years ago
11

Use the angle sum identity to find the exact value of cos 105

Mathematics
1 answer:
IrinaK [193]3 years ago
8 0
So use the angle sum identity which we know to be cos(105) =cos(45+60)=cos45 cos 60 - sin 45 sin 60 
You might be interested in
How to factor polynomials
Ierofanga [76]
<span>Check for the GCF first. ...Multiply the quadratic term and the constant term. ...Write down all the factors of the result, in pairs. ...<span>From this list, find the pair that adds to produce the coefficient of the linear term.</span></span>
6 0
3 years ago
Evaluate: 4+8 divided by 2x (6-3)
Volgvan

Answer:

Step-by-step explanation:

(4+8)/(2x(6-3)) = 12/(2x(6-3))  = 12/6x = 2/x

3 0
3 years ago
If two students from this college are selected at random, what is the probability that they are both males?
igor_vitrenko [27]

Answer:

P(A_1 and A_2) = P(A_1) *P(A_2)= 0.3*0.3 =0.09

Step-by-step explanation:

Assuming this problem :"Only 30% of the students in a certain liberal arts college are males. If two students from this college are selected at random, what is the probability that they are both males?"

Previous concepts

An independent event is an "event that has no connection to another event's chances of happening ". For this case we can assume that if one person is male and if we select another one the probability that this one would be male or female is totally indepedent from the first selection.

When we have two independent events let's say A and B and we want to find the probability that both events occurs at the same time we can use the following formula:

P(A and B) = P(A)*P(B)

Solution to the problem

We can define some notation:

A_1 first person selected is a male

A_2 second person selected is male

On this case we want the probability that both would be males. And we can express this like this on math terms:

P(A_1 and A_2)

For this case we can assume that the two events are independent. And in order to find the probability for two events independents events we just need to multiply the probabilities of each one like this:

P(A_1 and A_2) = P(A_1) *P(A_2)= 0.3*0.3 =0.09

5 0
3 years ago
The length of a rectangle is 5/6 inches and the width of the rectangle is 2/15 inches. What is the area of the rectangle (write
Snowcat [4.5K]
1/9


Mark brainliest please


Hope this helps you
3 0
2 years ago
B. Hanapin ang sagot (quotient) gamit ang paghahati-hati. (1 puntos bawat bilang = 5 puntos) 26.4)448 27.800 + 10 = 1 28. 3)663
xz_007 [3.2K]

answer :

120 + 6 = 126

explanation:

sa calculator lang yan haha jk

pero yan talaga ang sagot promise hindi ako ng bo-bola haha stay safe and stay positive na lang huwag lang sa c o vi d

3 0
3 years ago
Other questions:
  • the ratio of boys to girl in Mr. Claytons class is 2:3. If there are 30 total students how many more girls are in the class than
    7·2 answers
  • A car traveled at 55 miles per hour for 2.5 hours and then at 65 miles per hour for 3 hours. How far did the car go?
    11·2 answers
  • Simplify (2/3)^2∙81<br> please explain 2
    12·1 answer
  • Luisa has 24 students in her class. 3/4 of the students speak spanish as well as english. How many students speak both spanish a
    5·2 answers
  • Solve 2x + 6 &gt; 20.<br> O A. x&gt; 13<br> O B. x&gt;7<br> O c. x&lt; 13<br> O D. x&lt;7
    10·1 answer
  • My guys got me I am giving brainliest
    10·1 answer
  • F(x) = x2 – 2x + 5<br> .<br> What is the value of f(12) ?<br> f(12) =
    12·1 answer
  • Solve (x-5)^2=3 <br><br> Please help
    8·1 answer
  • Seven values on the number line above are marked with letters, Match the opposites,
    6·1 answer
  • Perform the indicated operation 1. (12 + 3) - 7 = N
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!