Questions Asked

hoopshiree:
Group Title
In polar coordinates, the positive xaxis is called the _________ axis.
 updated 5 months 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 5 months ago
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hoopshiree:
Group Title
Prove the identity: (sin^2theta) x (csc^2theta) = sin^2theta +cos^2theta
 updated 6 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 6 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 6 months ago
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hoopshiree:
Group Title
(____)^2 = (cscx  1)(cscx + 1)
 updated 6 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 6 months ago
 6 replies
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hoopshiree:
Group Title
1+cos(18x) = _____?
a. 2cos2(9x)
b. 2sin2(18x)
…
 updated 6 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 6 months ago
 3 replies
 1 Medal

hoopshiree:
Group Title
Which of the following is an identity?
a. sinx  cosx + 1 = tanx
…
 updated 7 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 8 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 8 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 8 months ago
 5 replies
 1 Medal

hoopshiree:
Group Title
How do you find the instantaneous velocity on a positiontime graph?
 updated 8 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 8 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 8 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 8 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 8 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 8 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 8 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 8 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 9 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 9 months ago
 3 replies
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hoopshiree:
Group Title
Find the exact value of sec(11 π / 3) using reference angles.
 updated 9 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 9 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 9 months ago
 2 replies
 1 Medal

hoopshiree:
Group Title
There are values of t so that the equation cos t = 3/5 holds.
 updated 9 months ago
 6 replies
 No Medals Yet

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 9 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 9 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 9 months ago
 6 replies
 1 Medal
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