Can someone please help

Mathematics

1 answer:

liq [111]4 years ago

7 0

Answer:

i d k

Step-by-step explanation:

i am sorry

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Use demoivre's theorem to show that; cos4¤ =8 cos4¤ -8cos2¤+1

ss7ja [257]

Answer:

$\cos4( \theta)=Re(\cos4( \theta)+i\sin4( \theta)) \\=Re(\cos ( \theta)+i\sin ( \theta))^4 \\ =Re(cos^4( \theta)+4cos^3( \theta)isin( \theta)+6cos^2( \theta)i^2sin^2( \theta)+4cosi^3( \theta)sin^3( \theta)+i^4sin^4( \theta)) \\cos( 4\theta) =cos^4( \theta)-6cos^2( \theta)sin^2( \theta)+sin^4( \theta) \\ =(1-\sin^2( \theta))^2-6(1-\sin^2( \theta))\sin^2( \theta)+sin^4( \theta) \\ = 1-2\sin^2( \theta)+\sin^4( \theta)-6\sin^2( \theta)+6\sin^4( \theta)+\sin^4( \theta) \\ =8\sin^4( \theta)-8\sin^2( \theta)+1$

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3 years ago

6. The table shows the relationship between x and y values.

alexgriva [62]

Answer:

y = x+5 This equation satisfies all the four sets of x and y values 1.When x = 5,y = x+5 = 5+5 = 10 2.When x = 10,y = x+5 = 10+5 = 15 3.When x =15,y = x+5 = 15+5 = 20 4.When x = 20,y = x+5 = 20+5 = 25 Hence,

Step-by-step explanation:

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3 years ago

Use wxy to find the measure of

Eddi Din [679]

Answer:

a circle

Step-by-step explanation:

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3 years ago

Simplify the expression (3/5)^3

Svetach [21]

Answer:

125

This is the answer sorry I couldn’t write it perfect!

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3 years ago

What property do you use to find the sum of 93+(68+7)?

musickatia [10]

Well lets first look at 93+(68+7). To find the sum we need to first find out what (the) in parenthesis. 68+7=75 and with the 93 we add 93+75 which is 178 then we multiply by 0 ( to simulate the difference ) then add 89 and double that amount. That is saying that 93+(68+7) is 178.

I'm sorry I didntexactly understand what you meant by ( property ), if this is what you meant dont say anything. If this is not what you wanted me to explain please tell me and I will do everything in my power to help you.

Hope I Helped! :D

5 0

4 years ago

Can someone please help​

Can someone please help