Precalculus : Pre-Calculus
Study concepts, example questions & explanations for Precalculus
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Example Questions
Example Question #1341 : Pre Calculus
Which of the trigonometric functions is represented by this graph?
y = csc x
y = cot x
y = sec x
y = tan x
y = csc x
This graph is the graph of y = csc x. The domain of this function is all real numbers except 
Example Question #1342 : Pre Calculus
Which of the following functions is represented by this graph?
y = cot x
y = tan x
y = csc x
y = sec x
y = cot x
This graph is the graph of y = cot x. The domain of this function is all real numbers except 
Example Question #1343 : Pre Calculus
Which of the following functions is represented by this graph?
y = sec x
y = tan x
y = cot x
y = csc x
y = sec x
This graph is the graph of y = sec x. The domain of this function is all real numbers except 
Example Question #1344 : Pre Calculus
Which of the following functions is represented by this graph?
y = cot x
y = sec x
y = tan x
y = csc x
y = tan x
This graph is the graph of y = tan x. The domain of this function is all real numbers except 
Example Question #5 : Trigonometric Graphs (All Six)
Which of the following functions has a y-intercept of 
The y-intercept of a function is found by substituting 
Thus, the function with a y-intercept of 
Example Question #5 : Trigonometric Graphs (All Six)
Which of the following functions is represented by this graph?
y = csc(x)
y = sec(x)
y = tan(x)
y = sin(x)
y = cos(x)
y = cos(x)
This graph is the graph of y = cos x. The domain of this function is all real numbers. The range of this function is 
Example Question #6 : Trigonometric Graphs (All Six)
Which of the following functions is represented by this graph?
y = sec x
y = tan x
y = sin x
y = csc x
y = cos x
y = sin x
This graph is the graph of y = sin x. The domain of this function is all real numbers. The range of this function is 
Example Question #8 : Trigonometric Graphs (All Six)
True or false: If you translate a secant function 
False
True
False
This is false. While the graphs of secant and cosecant functions are related, in order to turn a secant function into a cosecant function, you'd need to translate the original graph 
Example Question #1 : Trigonometric Graphs (All Six)
Where does the tangent function intercept the x-axis?
No solution
x= all real numbers
Because the tangent function is periodic, it intercepts the x-axis in infinitely many places. We can see several of these in the graph below:
In the photo, we can see that the function is intercepting the x-axis at 
Example Question #8 : Trigonometric Graphs (All Six)
True or false: If you translate a sine curve 90o to the left along the x-axis, you will have a cosine curve.
False
True
True
This is true! Notice the similarity of the shape between the graphs, but that they intercept the x-axis at different spots, and their peaks and valleys are at different spots.
y=sin(x), passes through the point (0,0)
y=cos(x), passes through the point (0,1)
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