Simplifying a rational trigonometric identity
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Mathematics
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11th Grade - University
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Practice Problem
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Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of multiplying by the conjugate in simplifying rational expressions?
To eliminate terms in the denominator
To add terms to the numerator
To change the expression to a polynomial
To increase the degree of the expression
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When multiplying a number by its conjugate, what mathematical principle is applied?
Sum of cubes
Sum of two squares
Difference of cubes
Difference of two squares
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can the expression 1 - cosine squared of Y be rewritten using trigonometric identities?
As cosine squared of Y
As secant squared of Y
As tangent squared of Y
As sine squared of Y
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of dividing sine squared of Y by itself?
Sine of Y
Cosine of Y
One
Zero
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the quicker method, what happens to the terms 1 - cosine of Y in the numerator and denominator?
They are multiplied together
They cancel each other out
They are added together
They are divided by each other
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