Questions Asked

hoopshiree:
Group Title
In polar coordinates, the positive xaxis is called the _________ axis.
 updated one month ago
 1 reply
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hoopshiree:
Group Title
Suppose a triangle has two sides of length 32 and 35, and that the angle between these two sides is 120. What is the length of the third sid…
 updated one month ago
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hoopshiree:
Group Title
Prove the identity: (sin^2theta) x (csc^2theta) = sin^2theta +cos^2theta
 updated 2 months ago
 8 replies
 2 Medals

hoopshiree:
Group Title
How many solutions does a triangle with side lengths a = 4, A = 112 , and b = 9 have?
 updated 2 months ago
 4 replies
 1 Medal

hoopshiree:
Group Title
_____ pi/3 cos pi/6 = 1/2 (sin pi/2 + sin pi/6) (Fill in the blank)
sin pi/4 sin pi/6 = 1/2 (____pi/12  cos 5pi/12) (Fill in the Blank)…
 updated 2 months ago
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hoopshiree:
Group Title
(____)^2 = (cscx  1)(cscx + 1)
 updated 2 months ago
 9 replies
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hoopshiree:
Group Title
2tan x / 1tan^2 x = 1/√3. What does x equal?
a. 11pi/12 + n(pi)
b. 5pi/12 + n(pi)
…
 updated 2 months ago
 6 replies
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hoopshiree:
Group Title
1+cos(18x) = _____?
a. 2cos2(9x)
b. 2sin2(18x)
…
 updated 2 months ago
 1 reply
 1 Medal

hoopshiree:
Group Title
Which are true?
a. tan^2 x + sec^2 x = 1
b. cos2a=1  2sin^2 a
…
 updated 2 months ago
 3 replies
 1 Medal

hoopshiree:
Group Title
Which of the following is an identity?
a. sinx  cosx + 1 = tanx
…
 updated 3 months ago
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hoopshiree:
Group Title
For this positiontime graph, what is the average velocity for the entire curve?
*image attached*
 updated 4 months ago
 7 replies
 1 Medal

hoopshiree:
Group Title
On a velocitytime graph, when is the object not moving?
when the slope is a straight line rising to the right
when the slope is a stra…
 updated 4 months ago
 4 replies
 1 Medal

hoopshiree:
Group Title
For this velocitytime graph, in which time interval is the object moving toward the reference point?
*image attached.*
 updated 4 months ago
 5 replies
 1 Medal

hoopshiree:
Group Title
How do you find the instantaneous velocity on a positiontime graph?
 updated 4 months ago
 28 replies
 2 Medals

hoopshiree:
Group Title
The reference point in this graph is a fly in the middle of the spider's web. During which time interval does the spider not move?
 updated 4 months ago
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hoopshiree:
Group Title
Which function's graph has a period of 2?
a. y=2sin3x
b. y=3cos(pi)(x)
…
 updated 4 months ago
 3 replies
 1 Medal

hoopshiree:
Group Title
Which of the following are equivalent to the function y = 4cos x  2?
a. y= 4sin(xpi/2)2
b. y=4sin(x+pi/2)  2
…
 updated 4 months ago
 17 replies
 3 Medals

hoopshiree:
Group Title
Let the function f(x) have the form f(x) = Acos(x  C). To produce a graph that matches the one shown below, what must the value of A be?
…
 updated 4 months ago
 7 replies
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hoopshiree:
Group Title
What is the period of the sinusoid given by y = 3cos (2pi/5 x) ?
…
 updated 4 months ago
 7 replies
 1 Medal

hoopshiree:
Group Title
True or false?
The graph of y = 4sin(x + 3)  2 is obtained by shifting the graph of y = 4sin x  2 horizontally 3 units to the right.
 updated 4 months ago
 4 replies
 1 Medal

hoopshiree:
Group Title
True or false?
Reflecting the graph of y = sin x across the yaxis is the same as reflecting it across the xaxis.
 updated 4 months ago
 5 replies
 1 Medal

hoopshiree:
Group Title
Which of the following describes the domain of y = sec x, where n is any integer?
a. x cannot equal pi/2 + n(pi)
b. x cannot equal n(pi)/2…
 updated 5 months ago
 2 replies
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hoopshiree:
Group Title
Which of the following functions is not a sinusoid?
a. y= cos x
b. y= sin x
…
 updated 5 months ago
 3 replies
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hoopshiree:
Group Title
Find the exact value of sec(11 π / 3) using reference angles.
 updated 5 months ago
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hoopshiree:
Group Title
Dr. Black is standing 20 feet from a streetlamp. The lamp is making his shadow 5 feet long. He estimates that the angle of elevation from th…
 updated 5 months ago
 2 replies
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hoopshiree:
Group Title
There are values of t so that sin t = .6 and cos t = .8
true or false
 updated 5 months ago
 2 replies
 1 Medal

hoopshiree:
Group Title
There are values of t so that the equation cos t = 3/5 holds.
 updated 5 months ago
 6 replies
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hoopshiree:
Group Title
Dr. Black is standing 20 feet from a streetlamp. The lamp is making his shadow 5 feet long. He estimates that the angle of elevation from t…
 updated 5 months ago
 No Medals Yet

hoopshiree:
Group Title
If sin > 0 and tan < 0 then:
a. 0 degrees < theta < 90 degrees
b. 90 degrees < theta < 180 degrees
…
 updated 5 months ago
 17 replies
 2 Medals

hoopshiree:
Group Title
Give an example of a real number t for which cos t is positive and sin t is negative.
…
 updated 5 months ago
 6 replies
 1 Medal
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