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Andreyy89
4 years ago
9

WILL GIVE BRAINLIEST! I need the answer to angle A

Mathematics
2 answers:
Vika [28.1K]4 years ago
6 0

Answer:

angle a equals 18

Step-by-step explanation:

VLD [36.1K]4 years ago
5 0
I think your answer would be 120:)
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The velocity of a particle moving along a line is given by v(t) = e ^ t * sin(e ^ t) the interval 0<= t<= pi 2 . What is t
Butoxors [25]

Answer:

0.44237 units

Step-by-step explanation:

Given

v(t) = e^t*sin(e^t)

0 \le t \le \frac{\pi}{2}

Required

The distance traveled in this interval

We have:

v(t) = e^t*sin(e^t)

The distance is calculated as:

d(t) = \int\limits^a_b {v(t)} \, dt

So, we have:

d(t) = \int\limits^{\frac{\pi}{2}}_0 {e^t*sin(e^t)} \, dt

Let:

u = e^t

Differentiate

\frac{du}{dt} = e^t

So:

dt = e^{-t} du

So, we have:

d(t) = \int\limits^{\frac{\pi}{2}}_0 {e^t*sin(e^t)} \, dt

d(t) = \int\limits^{\frac{\pi}{2}}_0 {e^t*sin(u)} \, e^{-t} du

Rewrite as:

d(t) = \int\limits^{\frac{\pi}{2}}_0 {e^t* e^{-t}*sin(u)} \, du

d(t) = \int\limits^{\frac{\pi}{2}}_0 {sin(u)} \, du

Integrate:

d(t) = -\cos(u)|\limits^{\frac{\pi}{2}}_0

Substitute u = e^t

d(t) = -\cos(e^t)|\limits^{\frac{\pi}{2}}_0

Split

d(t) = -\cos(e^\frac{\pi}{2}) - [-\cos(e^0)]

d(t) = -\cos(e^\frac{\pi}{2}) +\cos(e^0)

d(t) = -0.09793 + 0.5403

d(t) = 0.44237

The distance traveled in this interval is: 0.44237 units

dt =

d(t) = \int\limits^2_0 {e^t*sin(e^t)} \, dt

4 0
3 years ago
Evaluate if k = 3.<br> k2 + 5 = [?]
Grace [21]

Answer:

k=3 (3)x2+5=11

Hope this helps you and good luck :)

Step-by-step explanation:

8 0
3 years ago
Suppose that A is nonsingular. Prove that its inverse A-1 is unique. [Hint: Show that if there exists two matrices, B and C, suc
Bogdan [553]

Answer with Step-by-step explanation:

Let A is non-singular

\mid A\mid\neq 0

We have to prove that A^{-1} is unique.

Suppose B and C are inverse of A such that

BA=I and AC=I

By using property AA^{-1}=A^{-1}A=I

C=C

(BA)C=B(AC)

I\cdot C=B\cdot I

C=B

Hence, the inverse of A is unique.

4 0
3 years ago
Give the digits in the ones place and the hundredths place.<br> 74.12
Simora [160]

Answer:

The digit in the ones place is 4 and the digit in the 100ths place is 2

Step-by-step explanation:

7 0
3 years ago
Put the following rates of change in order from least to greatest A. - 42 B. - 2/3 C. 3/4 D. 25
I am Lyosha [343]

B,C,D,A

Step-by-step explanation:

This is the right answer because -42 and 25 are the largest and -2/3 and 3/4 are the smallest. So the answer is B,C,D,A

6 0
3 years ago
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