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3 years ago

PLZZZZ HELPPPP THIS IS TIMED!! look at picture

Mathematics

1 answer:

IrinaK [193]3 years ago

3 0

Answer:

Yes they are similar

Step-by-step explanation:

They are flipped and rotated, if there is only one to pick from, pick rotated

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Find the exact values of sin(u/2) cos(u/2) and tan(u/2) given sin u=24/25 and pie/2 < u < pie

vlada-n [284]

Recall the double/half angle formulas:

$\cos^2\dfrac x2=\dfrac{1+\cos x}2$

$\sin^2\dfrac x2=\dfrac{1-\cos x}2$

We're given $\sin u=\frac{24}{25}$ , and since $u$ is between π/2 and π, we expect $\cos u$ to be negative. So from the Pythagorean identity, we find

$\sin^2u+\cos^2u=1\implies\cos u=-\sqrt{1-\sin^2u}=-\dfrac7{25}$

Also, we know $\frac u2$ will fall between π/4 and π/2, so both $\sin\frac u2$ and $\cos\frac u2$ will be positive. Then we find

$\cos\dfrac u2=\sqrt{\dfrac{1+\cos u}2}=\dfrac35$

$\sin\dfrac u2=\sqrt{\dfrac{1-\cos u}2}=\dfrac45$

and it follows that

$\tan\dfrac u2=\dfrac{\sin\frac u2}{\cos\frac u2}=\dfrac43$

8 0

4 years ago

Write twelve thousand twelve hundred and twelve in numbers

dsp73

Answer:

12, 120,012

Step-by-step explanation:

7 0

3 years ago

A manager of a fast food restaurant wants the drive-thru employee to ask every fifth customer if he or she is satisfied with the

Ira Lisetskai [31]

Options:

All survey respondents

The proportion of customers who say they are satisfied with their service

C. All customers who use the drive-thru window of this fast food restaurant

D. All customers of this restaurant

Answer:A. All survey respondents

Step-by-step explanation: A population is the total number of people or a particular organism staying in a particular place or from where a sample can be gotten which is to be used for an experiment.

A survey is a research procedure used to obtain data from a pre-determined group of people,this data is about their own view about a given topic of interest in the research.

5 0

3 years ago

Ill mark brainlest plz help asap

solniwko [45]

<h3>Answer: $7.99</h3>

Explanation:

Pick any point listed and divide the y coordinate over the x coordinate.

The simplest choice is the point where x = 1

y/x = (7.99)/(1) = 7.99

Or we could say something like

y/x = (95.88)/(12) = 7.99

3 0

3 years ago

Which property of polynomial addition says that the sum of two polynomials is always a polynomial?

Alex Ar [27]

Answer:

Closure Property

Step-by-step explanation:

The closure property of addition for polynomials states that the result of adding two polynomials will always be another polynomial.

7 0

3 years ago

PLZZZZ HELPPPP THIS IS TIMED!! *look at picture*

PLZZZZ HELPPPP THIS IS TIMED!! look at picture