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3 years ago

What is the exact value of cos 45° as found on the unit circle?

1 answer:

Ber [7]3 years ago

4 0

The exact value of cos 45 as per the special triangle would be

Cos 45 = 1/✔️2

Rationalizing the denominator gives

✔️2/2 = 0.707.

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Which t-chart represents the absolute value equation y = |5x|?

Jlenok [28]

The second T-chart which would be
X | Y
-2. 10
-1. 5
0. 0
1. 5
2. 10

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3 years ago

Read 2 more answers

Elizabeth decided to invest $800 in a mutual fund that promises her a 12% return each year what is the sequence multiplier

Brut [27]

Answer:

the correct answer is 384

Step-by-step explanation:

Trust me plz

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3 years ago

Find the percent of change. Round to the nearest percent.

katovenus [111]

Answer:

Step-by-step explanation:

You will have to use this formula

$\frac{new value-oldvalue}{oldvalue}$

When substituted in you have $\frac{30-66}{66}$

30-66=-36

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Then you have to convert this into a percentage, -54.54(repeating) percent

To the nearest hundredth you would round down to<u> -54.5%</u>.

It is a Decrease because it is negatated.

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3 years ago

Please help!! 30 points if you answer. Answer ASAP!!Which word phrases can be modeled by the expression? Choose exactly two answ

shutvik [7]

N=number A: n divided by 7 minus 10 B: n times 7 minus 10 C: 10 divided by 7 minus n D: n divided by 7 minus 10

8 0

3 years ago

Help!! Which of the following best represents Z1 • Z2 select all that apply

AURORKA [14]

$z_1=\sqrt{3}\left(cos\:\frac{\pi }{4}+i\:sin\:\frac{\pi }{4}\right)$

$z_2=\sqrt{6}\left(cos\:\frac{3\pi \:}{4}+i\:sin\:\frac{3\pi \:}{4}\right)$

$\cos \left(\frac{\pi }{4}\right)=\frac{\sqrt{2}}{2}$

$\sin \left(\frac{\pi }{4}\right)=\frac{\sqrt{2}}{2}$

$\cos \left(\frac{3\pi }{4}\right)=-\frac{\sqrt{2}}{2}$

$\sin \left(\frac{3\pi }{4}\right)=\frac{\sqrt{2}}{2}\\$

$Z_1*Z_2=\sqrt{3}\left(cos\:\frac{\pi }{4}+i\:sin\:\frac{\pi }{4}\right)\cdot \sqrt{6}\left(cos\:\frac{3\pi \:}{4}+i\:sin\:\frac{3\pi \:}{4}\right)$

$=\sqrt{3}\left(\frac{\sqrt{2}}{2}+\:i\frac{\sqrt{2}}{2}\right)\cdot \sqrt{6}\left(\frac{-\sqrt{2}}{2}+\:i\frac{\sqrt{2}}{2}\right)$

On simplifying, we get

$Z_1* Z_2 =-3\sqrt{2}$

<h2>Therefore, correct option is 1st option.</h2>

3 0

3 years ago