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3 years ago

I need help with this asap

Mathematics

1 answer:

ddd [48]3 years ago

6 0

Answer:

SAS

Step-by-step explanation:

Becaus it is rectangle when we see it at the diagonal

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Please Help!!!

algol [13]

$f\left(\dfrac\beta2\right)=\sin\dfrac\beta2$

Recall the half-angle identity:

$\sin^2\dfrac\beta2=\dfrac{1-\cos\beta}2\implies\sin\dfrac\beta2=\pm\sqrt{\dfrac{1-\cos\beta}2}$

So in order to find $f\left(\dfrac\beta2\right)$ , we only need to know the value of $\cos\beta$ . But there are two possible values. To decide which to take, we use the given information: we know that $\beta$ lies in quadrant III, which means $\pi$ , so $\dfrac\pi2$ , which places $\dfrac\beta2$ in quadrant II. In this quadrant, the sine of angle is positive, and so

$\sin\dfrac\beta2=\sqrt{\dfrac{1-\cos\beta}2}$

$\beta$ is an angle of a ray whose terminal point, $\left(-\dfrac13,y\right)$ lies on the circle $x^2+y^2=1$ . The $x$ -coordinate is all we need to know in order to find that $\cos\beta=-\dfrac13$ . So,

$\sin\dfrac\beta2=\sqrt{\dfrac{1-\left(-\frac13\right)}2}=\sqrt{\dfrac46}=\dfrac{\sqrt2}{\sqrt3}=\dfrac{\sqrt6}3$

6 0

3 years ago

What is 3/4 of 36 cupcakes

Paraphin [41]

Answer:

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

What is the measure of each angle

kolbaska11 [484]

Your answer is X=22
Step-by-step
5X - 31= 79
5x= 79+31
X=110/5
So x=22 same as on

5 0

3 years ago

How many radians is 270°??

earnstyle [38]

Converting degrees to radians is easy if you remember,
$\pi =180$
So anytime you have an angle, just divide by 180 and put pi on the end.
$270 =\ \textgreater \ \frac{270}{180} \pi = \frac{3}{2} \pi$

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3 years ago

A motor has a power of 7,150 foot-pounds per second. Find the horsepower of the motor.

Fofino [41]

I believe the answer is d

7 0

4 years ago