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bearhunter [10]
3 years ago
15

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

Mathematics
1 answer:
Mazyrski [523]3 years ago
3 0

Answer:

  x = ±π/6 +kπ . . . for any integer k

Step-by-step explanation:

Solving for x, we have ...

  1 = 3tan(x)² . . . . . add 3tan(x)²

  ±√(1/3) = tan(x) . . . divide by 3, take the square root

  x = arctan(±√(1/3)) +kπ . . . . use the inverse function to find x

  x = ±π/6 +kπ

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[ 1 ] check whether -3 and 3 are the zeroes of the polynomial x² - 9.
rusak2 [61]

Answer:

<h3>#1</h3>
  • x² - 9 = 0
  • x² = 9
  • x = ± √9
  • x = ± 3

Yes, -3 and 3 are zeroes of this polynomial

<h3>#2</h3>

<em>See attached graphs</em>

Zero's of a polynomial are the intersection of the graph with the x-axis.

They include coordinates as (x, 0), so the x-coordinates are zero's.

The attached shows the zero's.

<h3>#3</h3>

<em>See attached graphs</em>

Zero's of each polynomial are reflected in the graphs.

  • () y = x² - x - 6 has zeros x = -2 and x = 3
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5 0
3 years ago
3.5.57
grin007 [14]

Answer:

y=4x+23 (lmk if you need me to explain)

Step-by-step explanation:

8 0
3 years ago
Let f(x) and g(x) be polynomials as shown below.
Margarita [4]
C- apex approved !!!
7 0
3 years ago
On a test, you earn 92% of the possible points by correctly answering 6 five-point questions and 8 two-point questions. How many
olya-2409 [2.1K]

Step-by-step explanation:

(6×5)+(8×2)=46

92℅=46points

100℅=x

criss cross

<u>92℅x=46</u>

<u>9</u><u>2</u><u>℅</u><u>.</u><u> </u> 92℅

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8 0
3 years ago
Read 2 more answers
A minimum temperature of -4.44°C was recorded at a lake. A minimum temprature of 23.3°C was recorded later on the same day. Dete
GuDViN [60]

Answer:

27.74 is the difference

Step-by-step explanation:

23.3° C - (-4.44° C)

23.3 + 4.44

27.74

5 0
2 years ago
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