izhangy
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 2
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 Medals Received
 1

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 Questions Asked
 45
 Questions Answered
 0
 Medals Received
 2

 Questions Asked
 2
 Questions Answered
 0
 Medals Received
 1

 Questions Asked
 0
 Questions Answered
 0
 Medals Received
 0

 Questions Asked
 45
 Questions Answered
 0
 Medals Received
 2

0 
Questions Asked

izhangy:
Group Title
Find the standard form of the equation of the ellipse.
Vertices: ( 4, 1), (4, 11)
…
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
Use the sumtoproduct formulas to write the sum or difference as a product.
sin 5θ + sin 3θ
 updated one year ago
 3 replies
 2 Medals
Mathematics

izhangy:
Group Title
Use the figure to find the exact value of the trigonometric function.
2cos(θ/2) tan(θ/2)
 updated one year ago
 4 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
Find the exact values of the sine, cosine, and tangent of the angle.
19π/12 = 11π/6  π/4
 updated one year ago
 8 replies
 1 Medal
Mathematics

izhangy:
Group Title
Find all solutions of the equation in the interval [0, 2π) algebraically.
sin^2 x + cos x + 1 = 0
 updated one year ago
 4 replies
 1 Medal
Mathematics

izhangy:
Group Title
Find all solutions (to three decimal places) of the equation in the given interval. ?????????
cos^2 x  2cos x  1= 0 [0,π]
 updated one year ago
 8 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
Find all solutions (to three decimal places) of the equation in the given interval. ?????????
cos^2 x  2cos x  1= 0 [0,π]
 updated one year ago
 No Medals Yet
Mathematics

izhangy:
Group Title
What are the xintercepts for:
y= sin πx + cos πx ???
 updated one year ago
 3 replies
 1 Medal
Mathematics

izhangy:
Group Title
Solve for t.
792πt=2π
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
Find all solutions of the equation in the interval [0, 2π) algebraically.
sin^2 x + cos x + 1 = 0
 updated one year ago
 16 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
For the simple harmonic motion described by the trig functioon, find (a) the maximum displacement, (b) the frequency, (c) the value of d whe…
 updated one year ago
 15 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
x^3 5x^2 3x+15=0
Solve for x.
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
How to solve? Solve for x.
125x^102x^7
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
Solve the equation:
cos x( cos x  1) = 0
 updated one year ago
 23 replies
 2 Medals
Mathematics

izhangy:
Group Title
How to do #54? Look at the picture below.
 updated one year ago
 12 replies
 1 Medal
Mathematics

izhangy:
Group Title
Please help me on this. Problem #12. Look at the picture below.
 updated one year ago
 5 replies
 1 Medal
Mathematics

izhangy:
Group Title
Problem #26. PLEASE HELP ME. Look at the picture.
 updated one year ago
 10 replies
 1 Medal
Mathematics

izhangy:
Group Title
Solve the right triangle.
B=54°, c=15. Find A, C, a, b
 updated one year ago
 7 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
Write an algebraic expression that is equivalent to the expression. PLEASE HELP ME.
cos( arcin (xh)/r)
 updated one year ago
 No Medals Yet
Mathematics

izhangy:
Group Title
A security car with its spotlight on is parked 20 meters from a long warehouse.
(a) Write θ as a function of x.
…
 updated one year ago
 4 replies
 1 Medal
Mathematics

izhangy:
Group Title
Find the exact value of the expression. Use a graphing utility to verify your result. (Hint: Make a sketch of a right triangle.)
tan[arcs…
 updated one year ago
 No Medals Yet
Mathematics

izhangy:
Group Title
Plot the points onto graph. Determine the horizontal asymptotes of the graph. PLEASE HELP.
x= 10, 8, 6, 4, 2, 0, 2, 4, 6, 8, 10
y= 1…
 updated one year ago
 9 replies
 1 Medal
Mathematics

izhangy:
Group Title
A television camera is on a reviewing platform 36 meters from the street on which a parade will be passing from left to right. Write the di…
 updated one year ago
 No Medals Yet
Mathematics

izhangy:
Group Title
Use a graphing utility to graph the two equations in the same viewing window. Use the graphs to determine whether the expressions are equiva…
 updated one year ago
 8 replies
 1 Medal
Mathematics

izhangy:
Group Title
Use a graph to solve the equation on the interval [2π, 2π]. PLEASE HELP ME.
cot x = √3
 updated one year ago
 5 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
Use the graph of the function to determine whether the function is even, odd, or neither.
f(x) = tan x
 updated one year ago
 3 replies
 1 Medal
Mathematics

izhangy:
Group Title
What is the graph and period of y=csc x?
 updated one year ago
 2 replies
 No Medals Yet
Mathematics

izhangy:
Group Title
Find the values of the six trigonometric functions of θ.
Function Value: sin θ = 0
…
 updated one year ago
 8 replies
 1 Medal
Mathematics

izhangy:
Group Title
Use the given function value(s) and the trigonometric identities to find the indicated trigonometric functions.
tan β = 5
…
 updated one year ago
 11 replies
 1 Medal
Mathematics

izhangy:
Group Title
When does the limit not exist?!?
 updated one year ago
 10 replies
 4 Medals
Mathematics
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