All categories

3 years ago

Given cos A 0.42, find angle A in degrees. Round your answer to the nearest hundredth.

Mathematics

2 answers:

kow [346]3 years ago

5 0

Answer:

Step-by-step explanation:

22.78.................................

k0ka [10]3 years ago

4 0

Answer:

A = 65.17

Step-by-step explanation:

Cos A = .42

Take the inverse cos of each side

arccos cosA = arccos .42

A = 65.16541251

To the nearest hundredth

A = 65.17

You might be interested in

Please help me with this math problem if you can. You just say yes or no if it’s a square, rectangle, etc. and then give the rea

insens350 [35]

Answer:

rectangle because the diagnals are congruent

Step-by-step explanation:

7 0

3 years ago

Which function matches the<br> graph?

Effectus [21]

I think it’s a reciprocal function

5 0

4 years ago

Jamal drew the function below. Which explains whether or not his function is linear?

ioda

Answer:

A it is linear because it has a constant rate of change

5 0

3 years ago

Read 2 more answers

The function a(t)=t^(1/2)−t^(−1/2) m/s^2 represents the acceleration of a particle moving along a horizontal axis. At time t=0,

garri49 [273]

Answer:

see below

Step-by-step explanation:

a(t)=t^(1/2)−t^(−1/2)

We integrate to find the velocity

v(t) = integral t^(1/2)−t^(−1/2) dt

= t ^ (1/2 +1) t ^ (-1/2 +1)

------------ - ----------------- + c where c is the constant of integration

3/2 1/2

v(t) = 2/3 t^ 3/2 - 2 t^ 1/2 +c

We find c by letting t=0 since we know the velocity is 4/3 when t=0

v(0) = 2/3 0^ 3/2 - 2 0^ 1/2 +c = 4/3

0+c =4/3

c = 4/3

v(t) = 2/3 t^ 3/2 - 2 t^ 1/2 +4/3

To find the position function we need to integrate the velocity

p(t) = integral 2/3 t^ 3/2 - 2 t^ 1/2 +4/3 dt

2/3 t ^ (3/2 +1) 2 t ^ (1/2 +1) 4/3t

------------ - ----------------- + ------------- + c

5/2 3/2 1

p(t) = 4/15 t^ 5/2 - 4/3t ^ 3/2 + 4/3t +c

We find c by letting t=0 since we know the position is -4/15 when t=0

p(0) = 4/15 0^ 5/2 - 4/3 0 ^ 3/2 + 4/3*0 +c = -4/15

0 +c = -4/15

c = -4/15

p(t) = 4/15 t^ 5/2 - 4/3t ^ 3/2 + 4/3t -4/15

8 0

3 years ago

Read 2 more answers

Like charges repel and I like charges attract Coulomb’s law states that the force F of attraction or repulsion between two charg

olga_2 [115]

Step-by-step explanation:

For the charges that have same sign of charges will repel each other while for the charges that have different charges will attract each other. So, we can say that like charges repel and unlike charges attract each other.

The Coulomb's law of attraction of repulsion states that force between charges is directly proportion to the product of charges and inversely proportional to the square of distance between them. Mathematically, it is given by :

$F=\dfrac{kq_1q_2}{r^2}$

Hence, all the given statements are true.

8 0

3 years ago