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enyata [817]
3 years ago
13

when is better to use the unit circle vs. right triangles vs. trigonometric identities? Give an example of each and explain why.

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
7 0

Answer:

In an introductory trignometry course, there are many options for introducing trigonometric functions: • As ratios of sides of right triangles ...

Top

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1) Which circles are congruent?
alexdok [17]
Hello!

1) A and D

The radius is the distance from the center of a circle to any part of the edge. Both A and D have a radius of three, regardless of what direction they go.

2)  5"

In circle C we see that there is a line segment that is 5" that goes from the center to the edge, or the radius.

3) C

The different variables are representing different points on the circles. The circle that contains a line connecting C and L is circle C.

4) BN

Circle B contains a radius that is the distance from B to N, or BN.

5) EF

The diameter is the distance of a  straight line that was pass through the middle of a circle, or its width. The diameter is double the radius. In circle A we see that line EF passes through the center put goes all the way across the circle.

6)IJ

Line IJ isn't even linear, so it could not be the radius. Both AG and BH are straight lines that represent the radius.

7) 6"

The diameter is always twice the radius. In circle A the radius is 3, so the diameter is 6.

8) A and D

Just as we said in the first answer, A and D both have a radius that measures 3 inches.

I hope this helps!
7 0
3 years ago
The point (2,6) lies on the graph of the equation y = kx^2 - 3x Find the value of K
MAVERICK [17]

Answer:

<h2>k = 3</h2>

Step-by-step explanation:

y = kx² - 3x

Since the points lie on the graph we can substitute the values of x and y that's

( 2 ,6) into the equation to find k.

We have

6 = (2)²k - 3(2)

6 = 4k - 6

4k = 6 + 6

4k = 12

Divide both sides by k

That's

\frac{4k}{4}   =  \frac{12}{4}

We have the final answer as

<h3>k = 3</h3>

Hope this helps you

4 0
3 years ago
A pizza is divided into 12 pieces. Glenn and Sophie each ate 1/4 of the pizza on Thursday. The next day Sophie ate 1/3 of the pi
Natali5045456 [20]

Answer:

6 slices

Step-by-step explanation:

The full pizza is 12 pieces.  Divide 12 by 4 to find out how much she ate on Thursday.   1/4 of 12 is 3 so she ate 3 slices on Thursday.  Subtract 3 from 12 to find out how much was left for the next day.  There were 9 slices the next day.  Next, divide 9 by 3 to find out what 1/3 of 9 is.  1/3 of 9 is 3 so subtract 3 from the 9 slices.  6 slices are the original pizza remain.

3 0
3 years ago
5x-(x +3)=1/3(9x+18)-5
goldfiish [28.3K]
Here is the answer with the work shown
7 0
3 years ago
Read 2 more answers
If tan fº = 2/1 and the measure of yw is 8 units, what is the measure of xw?
erma4kov [3.2K]

*see attachment for the figure referred to

Answer:

4 units

Step-by-step explanation:

Given that tan(f) = \frac{2}{1}, therefore, it follows that:

tan(f) = \frac{opp}{adjacent} = \frac{YW}{XW} = \frac{8}{XW},

If the ratio of YW to XW = 2:1, therefore, \frac{2}{1} = \frac{8}{XW}

Cross multiply to find XW

XW*2 = 8*1

XW = \frac{8}{2} = 4 units

5 0
4 years ago
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