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Natalija [7]
3 years ago
15

What is the expanded equivalent of sin(a + b)

Mathematics
2 answers:
Law Incorporation [45]3 years ago
6 0

Answer: sin(a+b)= sin(a)*cos(b)+sin(b)*cos(a).

Step-by-step explanation: we can write some trigonometric functions in different ways (some more simplified that others), in the case of the given problem, the expanded equivalent of the expression sin(a+b) can be written as follows:

sin(a+b)= sin(a)*cos(b)+sin(b)*cos(a).

laila [671]3 years ago
5 0
Sin(a + b) = sin a .cos b + cos a . sin b
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krek1111 [17]

Answer:

I am not so sure but I think it is x>3

Step-by-step explanation:

8 0
2 years ago
A simple random sample of 25,000 individuals are surveyed in order to determine the prevalence of individuals that contracted th
Neko [114]

Answer:

The prevalence of flu for the past year, as indicated from the survey participants, was of 17%.

Step-by-step explanation:

Given the survey, the prevalence of the flu, as a percentage, is given by:

Number of individuals diagnosed with flu, multiplied by 100, and divided by the size of the sample.

In this question, we have that:

Sample of 25,000, and 4,250 of those had been diagnosed with the flu at some point in the past year. So, the prevalence of the flu is given by:

\frac{4250*100}{25000} = 17

The prevalence of flu for the past year, as indicated from the survey participants, was of 17%.

4 0
3 years ago
The High Roller, a giant ferris wheel in Las Vagas, casts a 242-foot shadow. A 6’3” tall man standing nearby casts a 2 3/4-foot
Ira Lisetskai [31]

Answer:

550ft

Step-by-step explanation:

Simple napkin math, so you know what both shadows are you need to find how tall the High Roller is we will use X for this.

\frac{242ft}{6'3"}  x \frac{x}{2'9"}

Im not 100% I set it up right but essentially 242 divided by 2'9" and that equals 88

Take 88 and multiply that by 6'3" and you get your Height for the High Roller

What I did their was I scaled the humans height to that of the High Roller dividing it gives you a number you can use to scale the height of that human to how it should scale to the High Roller, which is why I took 88 and multiplied it by the human's height.

Hope this helped :)

6 0
2 years ago
The ratio of boys to girls in WIN is 2:3. If there are 8 boys how many girls are there
IRISSAK [1]

If there is 8 boys then there is 12 girls because 2x4=8 boys so 3x4=12 girls.

4 0
2 years ago
Conditional Probability
trapecia [35]
To solve for P(QIR) we use the formula:
P(QIR)=[P(Q∩R)]/P(R)
But from the diagram:
P(Q∩R)=3/22
P(R)=7/22
hence
P(QIR)=3/22÷7/22=3/7
3 0
3 years ago
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