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3 years ago

70 points HELPP EASY MATH SOH CAH TOA

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

5 0

Step-by-step explanation:

As truangle is right angled ,

sinB = 2/3

B = 41.8

Zinaida [17]3 years ago

3 0

From right $\triangle ABC,$ we have $\sin B=\frac{AC}{AB}=\frac{2}{3}.$ Using a calculator, we find $\angle B=\arcsin\frac{2}{3}\approx\boxed{41.81^\circ}.$ Since $\angle B$ is acute, this answer is correct, as this lies within the range of the arcsine function.

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ahrayia [7]

Answer:

x=80

Step-by-step explanation:

The angle of a line is 180*.

The equation would be (x+20)+x=180

Subtract 20 from both sides: 2x=160

Divide by 2: x=80

That's your answer!

I hope this helps!

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Find the equation of the line using the point-slope formula. Write all the final equations

vivado [14]

Answer:

$y=\frac{1}{2}x+\frac{5}{2}$

Step-by-step explanation:

We are going to find the slope by lining up the points vertically and subtract, then put 2nd difference over first.

Also you could just use $\frac{y_2-y_1}{x_2-x_1}$ . It is the same thing.

( 5 , 5)

-( 1 , 3)

--------------

4 2

So the slope is 2/4 or 1/2 after reducing.

The point-slope form a line is

$y-y_1=m(x-x_1)$ with a point on the line $(x_1,y_1)=(1,3)$ given and with slope $m=\frac{1}{2}$ given.

$y-3=\frac{1}{2}(x-1)$

We are going to solve this for y and simplify what we can because our goal is y=mx+b; this is slope-intercept form. It is called that because it tells us the slope,m, and the y-intercept,b.

Distribute:

$y-3=\frac{1}{2}x-\frac{1}{2}$