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sveta [45]
2 years ago
8

Check all that apply. π/6 is the reference angle for:

Mathematics
2 answers:
oee [108]2 years ago
6 0

Answer:

Option B. 13π/6 and Option D. 5π/6

Step-by-step explanation:

To get the reference angle π/6 for the given angles we will check each angle given in the options.

A. 8π/6

Since 8π/6 means 240° which lies in 3rd quadrant. Therefore reference angle of 240°= 240-180 = 60° or π/3

B. 13π/6

13π/6 means 390° which lies in first quadrant.

Therefore reference angle = 390-360 = 30° or π/6

C. 3π/6

Since 3π/6 means 90° therefore reference angle of 90° is the same as 90°.

Or the reference angle is = π/2

D. 5π/6

5π/6 means angle is 150° which lies in second quadrant therefore reference angle of 150° = 180-150 = 30° or π/6

answer is Option B and D.

pogonyaev2 years ago
4 0

Answer:

The correct is choice B.

Step-by-step explanation:

π/6 is an angle located in the first quadrant. Consequently, the equivalent angle for which it references should also be located in this same quadrant and is obtained by adding 2π to π/6 which becomes 13π/6

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0.252 divided by 4.2
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Answer:

0.06

Step-by-step explanation:

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3 0
3 years ago
Evaluate the function below for x=3<br><br> f(x)=2x^3-x^2-4x+9
elixir [45]
Hello,

f(x)=2x^3-x^2-4x+9=(((0+2)x-1)x-4)x+9

f(3)=(((0+2)*3-1)*3-4)*3+9=((2*3-1)*3-4)-3+9=(5*3-4)*3+9=11*3+9=33+9=42

or

f(3)=2*3^3-3^2-4*3+9=2*27-9-12+9=54-12=42

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3 years ago
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What does 2*-2-(3- -2) equal
Dovator [93]

Answer:

The value of the expression 2*-2-(3- -2) is -9.

Step-by-step explanation:

2 x (-2)- (3- -2)

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=<u><em>-9</em></u>

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8 0
3 years ago
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How do I solve fo A when A/2m=9+H
Neko [114]

Answer:

Step-by-step explanation:

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Hope this helps!

4 0
2 years ago
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Pia printed two maps of a walking trail. The length of the trail on the first map is 8 cm. The length of the trail on the second
Vlada [557]
Scale :

Map 1 : Actual
1 cm   :  2 km
1 cm   :  200 000 cm          | Convert 2km to 200 000cm

Answer: The scale is 1 : 200 000 

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1 cm   :  200 000 cm 
(x8)    :   (x8)
8 cm :  1 600 000cm

1 600 000 cm = 16 km

Answer: The length of the actual trail is 16 km

Map 1 : Map 2
8cm   :   6cm
1cm    :    0.75 cm

Answer : The scale is 1 : 0.75

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1    :  0.075 

3mm : 0.075 x 3 = 0.225mm

4mm : 0.075 x 4 = 0.3 mm

5mm : 0.075 x 5 = 0.375 mm

Answer: The side lengths are 0.225mm, 0.3 mm and 0.375 mm

3 0
3 years ago
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