Answer:
Greetings!
The y-intercept denotes the place where the red line crosses the y-coordinate.
Y= the vertical axis
X= the horizontal axis
(If you look closely you will see that the axes are labeled x & y)
So where that ol red line cross the y-axis?
Hint: it's a number between 2 & 4 :)
When you write the answer be sure to put it in fancy coordinates notation, e.g.:
(0,x)
Where x is the value where the red line crosses, and 0 is the x-axis value (since the red line doesn't cross the x-axis where it crosses the y-axis.
Whew, how many times can I write the word "axis" before it starts to look funny?
Anyway, hope that helps dear lad or lassie.
Carry on! You got this!
Answer:
3
Step-by-step explanation:
bc you can trust me
Answer:
0.2036
Step-by-step explanation:
u = arcsin(0.391) ≈ 23.016737°
tan(u/2) = tan(11.508368°)
tan(u/2) ≈ 0.2036
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You can also use the trig identity ...
tan(α/2) = sin(α)/(1+cos(α))
and you can find cos(u) as cos(arcsin(0.391)) ≈ 0.920391
or using the trig identity ...
cos(α) = √(1 -sin²(α)) = √(1 -.152881) = √.847119
Then ...
tan(u/2) = 0.391/(1 +√0.847119)
tan(u/2) ≈ 0.2036
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<em>Comment on the solution</em>
These problems are probably intended to have you think about and use the trig half-angle and double-angle formulas. Since you need a calculator anyway for the roots and the division, it makes a certain amount of sense to use it for inverse trig functions. Finding the angle and the appropriate function of it is a lot easier than messing with trig identities, IMO.
Answer:first one is 5 and second one is -4
Step-by-step explanation:
Answer:
A. (2,-0.5)
Step-by-step explanation:
A pair of coordinates is always (x,y) so
If you insert the numbers into the equation you get
10(-0.5) = 3(2) - 11
-5 = 6 - 11
-5 = -5
Therefore (2,-0.5) is the point that likes on the graph
