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WorksheetsUnit 5 – Trig Functions - Radian - Vocab
Total questions: 87
Worksheet time: 47mins
We start things with a....
BANG
BANG
BANG
BANG
True or False: Regular Sine is a one to one function.
True
False
A ---- function is a function that maps no two elements of its domain to a single value in its range
one to one
inverse
What is the domain of a restricted sine?
(−2π, 2π)
(−1,1)
What is the range of restricted sine?
(−2π, 2π)
(-1,1)
f−1(f(x))=sin−1(sinx)=x than has a restriction of
(−2π,2π)
−1≤x≤1
f(f−1(x))=sin(sin−1x)=x has a restriction at
−2π≤x≤2π
−1≤x≤1
How should y=sin−1x be also written
x=siny
y=sinx
When finding the exact values for certain composite functions such as Sine, and it exceeds the radians, what can one do?
Use the reference angle
Use The angle given that exceeds the limit
What is the domain of cosine that is one to one?
0≤x≤π
−1≤x≤1
What is the range of cosine function?
−1≤x≤1
0≤x≤π
f−1(f(x))=cos−1(cos(x))=x What restriction would this have?
0≤x≤π
−1≤x≤1
Cosine is
odd
even
Sine is
even
odd
f(f−1(x))=cos(cos−1x)=x restriction occurs
0≤x≤π
−1≤x≤1
y=tan−1x
x=tany
y=tanx
What restriction does this have f−1(f(x))=tan−1(tan(x))=x
−2π≤x≤2π
−∞≤x≤∞
What is the restriction of this f(f−1(x))=tan(tan−1x)=x
2−π≤x≤2π
−∞≤x≤∞
What is the first step finding inverse of a trig function
Switch X and Y
Solve For Y
Do Inverse Operations
What is the second step to finding the inverse function of a trig function?
Make sure y is alone with the sine
Solve X and Y
Switch X and Y
True or False: Reference angle can be negative and Positive
True
False
What must the new angle found from the followed angle be
The same sign
Follow the restrictions of the trig
Be total of 360 degrees
Be the same distance from the x-axis from the reference angle
sin(x) is really
y(ratio)
x(angle)
sin−1(x) is really
y(ratio)
x(angle)
When asked to find the exact value of sin(tan−1(21)) what should one do?
Find the angle of the inside
Find the restriction of the domain of the inner function.
Find the entire triangle to than find sine ratio
True or False: Follow the restriction given for the inner functions of an expression
True
False
What is sec domain
0≤x≤π
∣x∣≥1
x y=2π
Find the range of sec(x)
0≤y≤π
∣y∣≥1
y=2π
The domain and range of inverse trig functions....
stay the same
switch from their inverses
only sine and cosecant switch
What is the domain of csc(x)
−2π≤x≤2π
0<y<π
0≤y≤π
y=0
y≥0
The range of csc(x) is also known as
∣y∣≥1
∣y∣≤1
What is the domain of cot(x)
0<x<0
0≤x≤π
0<x<π
What is the range of cot(x)
−∞≤x<∞
−∞≤x≤∞
−∞<x<∞
X is often known in trig functions as the
domain
the angle
ratio
Y is often known as
ratio
angle
True or False: Finding the inverse of secant and cotangent can both use cosine
True, Inverse of Secant and Cotangent share the same domain of cosine. Both are reciprocals of cosine, therefore just flipping them will do!
True, Inverse of secant and cotangent share the same domain of cosine, however secant is just the reciprocal of cosine. Cotangent must give the correct sides to than evaluate with cosine
Cotangent works in which quadrants?
1
2
3
4
Which quadrants does tangent work in?
1
2
3
4
Cosecant works in which side?
1
2
3
4
Secant Works In this Side
1
2
3
4
Cosine works in this side
1
2
3
4
Sine works in this side
1
2
3
4
Cosecant Works in Which One?
1
2
3
4
Writing a trigonometric Expression is the same as finding the exact value of an Inverse Cosecant Function, except....
There is no except, keep using them numbers!
This time we are using variables to draw out these ratios!
Quizizz AI returned better and stronger! How should we celebrate?!
Welecome back Quizizz AI to my math learning, how are you better than human made questions and concept questions?
There is infinite amount of solutions for trig functions if there ins't a limit
k∈Z What do the k the middle part and Z mean
If there is not limit in solutions for trig function, we can "find all solutions" by making a equation that includes by adding the solution by the period times a variable representing integers, right?
When stating the solutions, you should order them how?
When a degree is being multiplied in a trig function, is it true that you should multiply than the interval, find the angles that fit in it, and than divide it by what you multiplied by the interval?
When having a trig function adding or subtracted to the degree, should we first find the angle and than subtract. Or subtract and than find the angle?
When solving a trigonometric equation and there is degrees resembling a polynomial quadratic, can you replace the trig functions with a variable to find the solutions?
True or False: Most Trigonometric Equations have unique solutions
When writing a equation statement for tan, what can you do instead of adding 2pi for both solutions?
How can (sin(t))3 also be written as in notation?
What is a Identity in math?
What is the difference between conditional and identities in math?
What is an example of a conditional statement in math vs idenity?
When you have a trig function, you can ----- it!
inverse
What are the two quotient identities?
What do all six reciprocal identities have in common?
Why is it wrong to call sine the inverse of cosecant, and back and forth, instead of reciprocal?
True or False: When establishing identities, its better to only focus on one side, the one with more complexity and free way, than mix or do the simple one.
You can transform the identities of trig into the ones one needs
Which Pythagorean Identity is equal to one? Use words
Which Pythagorean Identity is equal to sec2x Use words
Which Pythagorean Identity is equal to csc2θ . Use words, not symbols.
Addition/Subtraction Trig Identities are used to find exact values
True or False: Addition/Subtraction Trig Identies use special right triangles
If you have addition/subtraction trig identity that exceeds 90 degrees, you must use the reference angle of the new quadrant and the sign of the quadrant for the trig function
You can multiply a fraction in the denominator and numerator with any value if they are the same
When doing Addition/Subtract Trig Identities, and you have csc, sec, and cot, you must the solving as a reciprocal
Is it true that trig functions are at its roots just a ratio
True or False: When using the half angle identity or addition and subtraction idenity, take a deep breath, and slowly find the ratios of the angles given. Remember sin(x), sin(y), cos(y), cos(x) are just equal to ratios
True
False
Ratios or just angles inside trig functions
When given ratios, and told to use half angle or double angle functions, should the students draw out a triangle and than find the required ratios for cosine, sine, and tangent?
Is it true that sine and cosine on their own cannot exceed 1 since the unit circle has a limit
True or False: Since and Cosine always have to add to one without being squared
Can sine and cosine both be negative 1 at the same time
When solving with trig identities, what tips can you give the student stuck in loops?
True or False: When solving a trig function, and you square, how many solutions do you get?
Is it true that you don't always have to keep on using trig identities to simplify or prove a trig function?
True or False: To rationalize a denominator with roots that are adding, you SHOULD NOT use congujate pairs to remove them
True or False: You have the freedom of solving trig functions in a larger way compared to other math concepts.
True or False: When solving for all soltuions of a trig functions, get values. Those aren't just the only ratios that gives angles, you must find all of them!
True
False
What are the last words to have before an exam that is worrysome
