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motikmotik
2 years ago
13

Which of the following functions maps 3 to –5?

Mathematics
2 answers:
GenaCL600 [577]2 years ago
3 0

Answer:

the second one

Step-by-step explanation:

soldier1979 [14.2K]2 years ago
3 0

f(x) = x - 5 Step-by-step explanation: i did the test

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Given that the value of x is between 0 and 360 degrees (0 and 360
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  • 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
Which two-dimensional shape cannot be used to create a pyramid?
adelina 88 [10]
I would say you cannot use a rectangle. Or a circle. One of those.
7 0
3 years ago
Read 2 more answers
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