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Dima020 [189]
3 years ago
7

What is the vertex and zeros of the function f(x)=x2−4x+3

Mathematics
1 answer:
loris [4]3 years ago
7 0

Answer:

The vertex is  (2,-9)

Step-by-step explanation:


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Given that the value of x is between 0 and 360 degrees (0 and 360
Brums [2.3K]

Answer:

  • 150° and 210°
  • 0

Step-by-step explanation:

It is convenient to memorize the trig functions of the "special angles" of 30°, 45°, 60°, as well as the way the signs of trig functions change in the different quadrants. Realizing that the (x, y) coordinates on the unit circle correspond to (cos(θ), sin(θ)) can make it somewhat easier.

__

<h3>20.</h3>

You have memorized that cos(x) = (√3)/2 is true for x = 30°. That is the reference angle for the 2nd-quadrant angle 180° -30° = 150°, and for the 3rd-quadrant angle 180° +30° = 210°.

Cos(x) is negative in the 2nd and 3rd quadrants, so the angles you're looking for are

 150° and 210°

__

<h3>Bonus</h3>

  You have memorized that sin(π/4) = √2/2, and that cos(3π/4) = -√2/2. The sum of these values is ...

  √2/2 + (-√2/2) = 0

_____

<em>Additional comments</em>

Your calculator can help you with both of these problems.

The coordinates given on the attached unit circle chart are (cos(θ), sin(θ)).

6 0
2 years ago
Given cos 0 = 1/6 and angle 0 is in Quadrant IV, what is the exact value of sin 0 in
Vinil7 [7]

cos 0 = 1/6

1 - cos²0 = sin²0

sin²0 = 35/36

in quadrant IV (4) the cos is positive sin is negative.

sin0 = - √35/6

4 0
2 years ago
HURRY! NEED HELP (15 points)
Vikentia [17]

Answer:


Step-by-step explanation:

The slopes of the two lines (representing the speeds of the trains) are the same, and so the two trains are traveling at the same speed.

6 0
3 years ago
Read 2 more answers
Which answer is this?
gavmur [86]

The odd one out would be the graph one so C...

7 0
3 years ago
∠P and ∠R are complementary and ∠P and ∠Q are complementary. Complete the proof that ∠R≅∠Q.
sukhopar [10]

Step 5 is <u>Transitive property of equality</u> or <u>substitution</u>

8 0
2 years ago
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