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DaniilM [7]
3 years ago
9

Need help please !!!

Mathematics
1 answer:
blsea [12.9K]3 years ago
7 0

Answer:

option C is the correct answer

Step-by-step explanation:

The trigonometric equation you are using has a general form

y = A* tan w*(x - r)

Where

A is the amplitude of the function

w is the frequency rad/s

r  is the phase shift

In your case

A = -2

The frequency is

w = (2*pi)/period

period = pi/4

w = 8

r = -pi/2

y = -2* cos 8*(x + pi/2)

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Un robot en Marte tiene los siguientes desplazamientos antes de lograr encontrar el lugar con las coordenadas indicadas para emp
sineoko [7]

Answer:

El desplazamiento total del robot es de aproximadamente 17.4 m 12.35° al sur del este

Step-by-step explanation:

El movimiento del robot en Marte se da como sigue;

1) El desplazamiento sur = 25 m

2) El desplazamiento 15 ° al norte del este = 35 m

3) El desplazamiento 37 ° al norte del oeste = 20 m

Por lo tanto, tenemos la moción en forma vectorial;

1) -25\hat j

2) 35·cos(15°)\hat i + 35·sin(15°)\hat j

3) -20·cos(37)\hat i + 20·sin(37°)\hat j

Por lo tanto, tenemos el desplazamiento resultante total, R, del robot está dado por la suma de los vectores como sigue;

R =  (35·cos(15°) - 20·cos(37)) \hat i + (35·sin(15°) + 20·sin(37°) - 25)\hat j

R = 17.8346937192 \hat i - 3.9050329583 \hat j  

La magnitud de R = √ ((17.8346937192) ² + (-3.9050329583) ²) ≈ 17.4 m

La magnitud de R ≈ 17,4 m

La dirección de R = Arctan ((- 3.9050329583) / (17.8346937192)) ≈ -12.35 °

La dirección de R ≈ -12,35 °

La dirección es aproximadamente 12,35 ° al sur del este

El desplazamiento total del robot es de aproximadamente 17.4 m 12.35 ° al sur del este

5 0
4 years ago
How much of the circle is shaded? Write your answer as a fraction in simplest form? 3/7 and 1/3 isn't shaded ​
LekaFEV [45]

Answer:

total = 1 \\  \frac{1}{2}  +  \frac{1}{7}  + x = 1 \\  \frac{1}{7}  + x = 1 -  \frac{1}{2}  \\  \frac{1}{7}  + x =  \frac{1}{2}  \\ x =  \frac{1}{2}  -  \frac{1}{7}  \\ x =  \frac{7 - 2}{7 \times 2}  \\ x =  \frac{5}{14}  \\  \\ shaded \: portin \:  =  \frac{5}{14}  \\ thank \: you

7 0
3 years ago
Read 2 more answers
HELP PLEASE! I'll give you the most stars for explaining and giving the answer
never [62]
1. Because each element in the domain is matched exactly with one element I. The range.
3 0
3 years ago
What is the area of triangle BCD to the nearest tenth of a square centimeter? Use special right triangles to help find the heigh
tatiyna

Answer:

Area = 21.7 cm² (nearest tenth)

Step-by-step explanation:

A 30-60-90 triangle is a special right triangle.  The measures of its sides have a special relationship in that they are in proportion:

shortest leg : longest leg : hypotenuse =  1 : √3 : 2

  • The side opposite 30° is the shortest leg
  • The side opposite 60° is the longest leg and is √3 times the length of the shorter leg.
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So we can also write the ratio as  x : x\sqrt{3} : 2x  where x is the shortest side.

From inspection of the diagram, the shortest side is 5 cm

⇒ BC (height) = 5 × √3 = 5√3 cm

Now we have the height, we can calculate the area.

Area of a triangle = 1/2 x base x height

                             = 1/2 x 5 x 5√3

                             = 21.7 cm² (nearest tenth)

4 0
2 years ago
Lan scores 44 out of 60 marks in a Maths test.
kolbaska11 [484]

Answer:

73.3 %

Step-by-step explanation:

To find the percentage

44/60

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Change to a percentage by multiplying by 100

73.3 %

4 0
3 years ago
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