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Rashid [163]
3 years ago
15

The exact value of cos17pi/8 is

Mathematics
2 answers:
Troyanec [42]3 years ago
8 0

Answer:

2.125

\pi

tino4ka555 [31]3 years ago
6 0

Answer:

2.125\pi

Step-by-step explanation:

17\pi/8

= 2.125pi

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Q.2. Separate the digits of the number "893451" as per National and
LuckyWell [14K]

Answer:

imm a bit sorry I could only answer the international one as the national is equal to international place value system

Step-by-step explanation:

eight hundred ninety three thousand four hundred fifty one

hth tth th h t o

8 9 3 4 5 1

I hope you understand

8 0
3 years ago
Solve for sin3theta​
aniked [119]

Answer:

 sin 3 θ  = 3 sin θ  - 4 sin³θ

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given    sin 3 θ  

            =  sin ( 2θ + θ )

apply trigonometric formula

       <em>  sin ( A + B) = sin A cos B + cos A sin B </em>

<em>         sin 2 A = 2 sin A cos B</em>

<em>         Cos 2 A = 1 - 2 sin² A </em>

<em>         cos ² A - sin ² A = 1</em>

<u><em>Step(ii):</em></u>-

    sin 3 θ  =     sin ( 2θ + θ )

               =  sin 2θ cosθ +  cos2θ sin θ

              = 2 sin θ cos θ cos θ +( 1 - 2 sin² θ )sin θ

              = 2 sin θ (cos² θ ) + sin θ- 2 sin³ θ

              = 2 sin θ ( 1- sin²θ) + sin θ- 2 sin³ θ

              = 2 sin θ - 2sin³θ +  sin θ- 2 sin³ θ

              = 3 sin θ  - 4 sin³θ

<u><em>Final answer</em></u> :-

 sin 3 θ  = 3 sin θ  - 4 sin³θ

                             

6 0
3 years ago
What are the coordinates of the midpoint of line segment AB?
GenaCL600 [577]

A = (2 , 8 )

B = ( 7 , -5 )

therefore, midpoint of AB

( x1 + x2/2 , y1 + y2/2 )

→ ( 2 + 7/2 , 8 + (-5)/2 )

→ 9/2 , 3/2

→ 4.5 , 1.5

<em>so,</em><em> </em><em>option </em><em>B </em><em>is </em><em>correct</em>

<em><u>hope </u></em><em><u>this </u></em><em><u>answer </u></em><em><u>helps </u></em><em><u>you </u></em><em><u>dear.</u></em><em><u>.</u></em><em><u>.</u></em><em><u> take</u></em><em><u> </u></em><em><u>care!</u></em>

4 0
3 years ago
Help me with this questionnnnn
svetlana [45]

Answer:

3:9=4

Step-by-step explanation:

That is my answer

please brainliest

6 0
3 years ago
Katherine Owes eight of her friends the same amount of money for total of $60
ArbitrLikvidat [17]

Answer:

7.50 per person

Step-by-step explanation:

60 divided by 8

7.5

7 0
4 years ago
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