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dem82 [27]
3 years ago
7

I've already posted this once, and haven't got an answer, so I am posting it again just in case my question got lost in the sea

of other questions. I'd be really grateful if I got any help.

Mathematics
1 answer:
adelina 88 [10]3 years ago
5 0
I know the answer to 17 is the measure of each angle is 45° but i’m not sure about the rest sorry
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A cable for a power transformer forms
posledela

Answer:

32 ft

Step-by-step explanation:

From the diagram, the side opposite the 60° angle is 28 feet.

We are looking for the approximate length of the cable.

The approximate length of the cable is the hypotenuse of the triangle shown.

Recall the sine ratio from SOH-CAH-TOA

Which means Sine of the angle is Opposite/Hypotenuse

Let the hypotenuse be h, then we have:

\sin(60) =  \frac{28}{h}

0.866 =  \frac{28}{h}

h =  \frac{28}{0.866}

h = 32.33

The length of the cable is approximately 32 feet

3 0
3 years ago
Find z1z2 if z1 = 2/5(cos63° + isin63°) and z2 = 10/3(cos117° + isin117°).
Airida [17]

Answer:

-10/3 is the answer

Step-by-step explanation:

Given are two complex numbers as

z1=\frac{2}{5} (cos63  + isin63)\\z2=\frac{10}{3} (cos 117 + isin117})

Recall Demoivre theorem as

(cosA+isinA)(cos A+isin B) = cos(A+B)+isin(A+B)

Hence here we have sum of angles  as

A+B = 63+117 =180

z1z2=\frac{2}{5} \frac{10}{3} (cos180+isin180)

=\frac{-10}{3}

Since sin180=0 and cos 180=-1

7 0
3 years ago
Help if i dont fiished my mom will beat me
maw [93]

Answer:

i think thats gonna be (1,6)

Step-by-step explanation:

6 0
2 years ago
57; 27; 72; 36; 61; 81; 45 From the numbers above, choose a prime factor​
Mrrafil [7]

Answer:

57

Step-by-step explanation:

3 0
2 years ago
Solve for y. 2/3 + y - 4/5 = 1/3 Enter your answer in the box. y =
erica [24]
<span>2/3 + y - 4/5 = 1/3
         y = 1/3 - 2/3 + 4/5
         y = -1/3 + 4/5
         y =-5/15 + 12/15
         y = 7/15</span>
3 0
2 years ago
Read 2 more answers
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