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Mashcka [7]
3 years ago
13

What are all the exact solutions of -3tan^2x+1=0? Give your answers in radians.

Mathematics
1 answer:
-BARSIC- [3]3 years ago
8 0

Answer:

x = π n_1 + π/6 for n_1 element Z

or x = π n_2 - π/6 for n_2 element Z

Step-by-step explanation:

Solve for x:

1 - 3 tan^2(x) = 0

Subtract 1 from both sides:

-3 tan^2(x) = -1

Divide both sides by -3:

tan^2(x) = 1/3

Take the square root of both sides:

tan(x) = 1/sqrt(3) or tan(x) = -1/sqrt(3)

Take the inverse tangent of both sides:

x = π n_1 + π/6 for n_1 element Z

or tan(x) = -1/sqrt(3)

Take the inverse tangent of both sides:

Answer:  x = π n_1 + π/6 for n_1 element Z

or x = π n_2 - π/6 for n_2 element Z

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crimeas [40]

Answer:

6, the property of addition.

Step-by-step explanation:

If you add 6 to both sides you used addition lol. Hope I helped, I'm not too good at explaining math sorry

8 0
3 years ago
Complete the factoring: <br><br> 5x^2-40x=5x( )<br><br> A) x-8 B)8-x C)x^2-8 D) 8-x^2
dolphi86 [110]

Answer:

A) x-8

Step-by-step explanation:

\mathsf{5x^2-40x=5x(x-8)}

because

\mathsf{5x(x-8)=5x\cdot x-5x\cdot8=5x^2-40x}

4 0
3 years ago
Find the slope of the line passing through the points (-9, -6) and (-4, 5)
Masja [62]

Answer:

11/5 slope

Step-by-step explanation:

5-(-6) -4-(-9)

11/ 5

4 0
3 years ago
Read 2 more answers
What is 7 1/2 hrs before 2:12 am
Elena-2011 [213]
6:42 pm because you just subtract the elapsed time. 
8 0
3 years ago
5. There are two kinds of products (called DA and GA) produced in your company every day. Alsothere are two kinds of materials (
chubhunter [2.5K]

Answer:

  • a) $56000
  • b) DA = 2, GA = 10

Step-by-step explanation:

<u>Given</u>

  • DA = A + B ⇒ $3000
  • GA = A + 2B ⇒ $5000
  • Number of A = 12
  • Number of B = 22

<u>We can see from the equations that</u>

  • GA - DA = B ⇒ $2000 and
  • A = $1000 and B = $2000 in terms of profit

<u>So greater use of unit B brings greater profit. We don't want any unit is left over, so get this equation.</u>

  • A + B = 12
  • A + 2B = 22

Is the equation set to indicate use of the units A and B

<u>Solving we get </u>

  • A = 2 and
  • B = 10

<u>It this case all the units are used and profit is maximum</u>

  • 2*$3000 + 10*$5000 = $56000
  • Number of DA = 2
  • Number of GA = 10
8 0
3 years ago
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