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Mashcka [7]
3 years ago
12

Use a half-angle identity to find the exact value of sin 3pi/8

Mathematics
2 answers:
Alenkinab [10]3 years ago
7 0

Answer:

The answer is A

Step-by-step explanation:

svet-max [94.6K]3 years ago
6 0

The above answer is correct! The correct response is A.

Just got it right on edge 2020, hope this helps!! Good luck, and have a great day! :)

You might be interested in
<img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx-3%7D%7Bx%2B2%7D%20%3D%5Cfrac%7B1%7D%7B5%7D" id="TexFormula1" title="\frac{x-3}{x+2
Shkiper50 [21]

Answer:

x=17/4

Step-by-step explanation:

(x-3)/(x+2)=1/5

cross product

1(x+2)=5(x-3)

x+2=5x-15

5x-x-15=2

4x-15=2

4x=2+15

4x=17

x=17/4

3 0
3 years ago
How to find the distance? I need help with part B
just olya [345]

Answer:

99.96

Step-by-step explanation:

Your height is correct.

Part B is asking for the length of the hypotenuse.

76.6^2 + 64.25^2 = x^2

x^2 = 9995.6225

x = 99.96 or 99.98 depending on if you round to 76.6 or not

8 0
3 years ago
Read 2 more answers
A taxi travels 25 km east of airport. Then it travels from that point to a point that is 40 km west of the airport. Finally the
Marizza181 [45]
The answer is:  " 95 km " .
__________________________________________________
Explanation:
__________________________________________________

                                   ("airport")
                                           •     {Step 1):       " 25 km east "               •<span>  
                                           </span>│===============================>  <span>│

                           </span>•  {Step 2):       " 40 km west ["of that point"] " ;        •                                             │<==========================================│<span>  
             
                          </span>•  {Step 3:  [back to airport] = " (40 km − 25 km) " ;

                                            • ("airport").
                         │=======>│
<span> _________________________________________________
                          
<u> Note</u>:  To find "total distance traveled:

" 40 km +</span> (40 km) + (40 km <span>− 25 km) " ; 

= </span>" 40 km + (40 km) + (15 km) " ;

= " 40 km + 40 km + (15 km) " ;

= 80 km + 15 km  ;   

=  95 km .
____________________________________________________
<span>
The answer is:  " 95 km <span>" .
</span>____________________________________________________

</span>
4 0
3 years ago
Is 1.66666667 Rational or irrational
devlian [24]

Answer:

Rational.

Step-by-step explanation:

1.666... can be expressed as \frac{5}{3}.

Hence it is rational.

4 0
3 years ago
Read 2 more answers
Please solve these! Read the instructions too!
sleet_krkn [62]
Just graph the coordinates
this picture is the different quadrants on the graph, whichever quadrant the coordinate is in, is what you put in the 2nd column
for example: (-2,-3) is in the 3rd quadrant
if its not in a quadrant its either on x or y axis, so its just on the line, and i assume you know which axis is which

for number 4. You just do subtraction, and then if its negative, it becomes positive since its asking for the absolute value
for example: |-24-11| > |-35| > 35

8 0
3 years ago
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