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3 years ago

PLS HELP What is the cos and sin for an angle of rotation 30, 45, 60 and 90 degrees? I WILL MARK AS BRAINLIEST PLZ HELP

Mathematics

1 answer:

Semmy [17]3 years ago

4 0

Answer:

Step-by-step explanation:

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The graph shows the distance Arlene ran on Saturday preparing for a marathon. What is the rate of change and what does it repres

andreev551 [17]

Answer:

Rate of change = 6 miles per hour

Step-by-step explanation:

Rate of change of the line is represented by the slope of the line.

Formula to get the rate of change is,

m = $\frac{\triangle y}{\triangle x}$

From the graph attached,

Given straight line is passing through two points (2, 12) and (4, 24).

Rate of change = $\frac{y_2-y_2}{x_2-x_1}$

= $\frac{24-12}{4-2}$

= 6

Rate of change of the line = 6 miles per hour

Therefore, rate of change of the graph will define the speed of Arlene.

3 0

2 years ago

For z = 2cis 60°, find z4 in rectangular form.

a_sh-v [17]

By DeMoivre's theorem,

$z=2\mathrm{cis}60^\circ\implies z^4=2^4\mathrm{cis}(4\times60)^\circ=16\mathrm{cis}\,240^\circ$
$z^4=16(\cos240^\circ+i\sin240^\circ)$
$z^4=16\left(-\dfrac12-i\dfrac{\sqrt3}2\right)$
$z^4=-8-i8\sqrt3$

5 0

3 years ago

Read 2 more answers

Express 5/7 as a decimal.

nignag [31]

Answer:

0.71428571428

Step-by-step explanation:

Do it the old fashioned way, get out your calculator, or google it.

3 0

3 years ago

Read 2 more answers

What’s the correct answer

matrenka [14]

Show a picture of it I can’t see one

5 0

3 years ago

How many solutions does y=2x+1 and x=-3 have

Nikolay [14]

Answer:

- 5

Step-by-step explanation:

given,

the relation is y=2x+1

if x=-3 than, y =2x+1

=2 * (-3)+1

= -6+1

-5

hence, the required answer is - 5

I found any one solution of given question.

7 0

2 years ago