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3 years ago

96 Children are on a school trip, there

Mathematics

1 answer:

iren2701 [21]3 years ago

5 0

14 mini buses but there will be 1 seat open

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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

4 years ago

One meter is approximately equal to 39.39 inches. About how many inches are in 3 meters

mojhsa [17]

Well if 1 is 39.39
39.39 times 3 is equal to 118.17

don't forget to get my answer 5 satrs and thank me- Justin

8 0

3 years ago

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What's the value of <br> The 1s in 5114

MissTica

The one near the five is in the hundreds place and the one near the 4 is in the tenth place.

Feel free to message me if you need help on another problem.

8 0

3 years ago

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HELP COLLEGE ALGEBRA

max2010maxim [7]

Answer:

1) $\frac{-8}{11}$

2) $1.276$

3) $\frac{3}{4}$

4) $0$

Step-by-step explanation:

The slope formula of the line that pass across two points P1(x1,y1) and P2(x2,y2) is:

$\frac{y2 - y1}{x2-x1} = slope$

You can use this formula to solve all the four points:

$\frac{6- -2}{-9 - 2} = \frac{-8}{11}$

$\frac{- 9.1 - 0.6}{-9.5 - - 1.9} = \frac{97}{76} =(Rounded)= 1.276$

$\frac{2-5}{-2 -2} = \frac{3}{4}$

$\frac{4-4}{-9 --4} = \frac{0}{-5} = 0 \\\\$

3 0

3 years ago

What is 1/5 divided by 1/2

Len [333]

The answer to your question is 0.1

4 0

3 years ago

Read 2 more answers