Solving a trigonometric equation with an undefined answer of cosine

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Mathematics
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11th Grade - University
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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 first step in solving a quadratic equation using the zero product property?
Combine like terms
Factor the equation
Use inverse operations
Apply the quadratic formula
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When applying the zero product property to trigonometric functions, what is a crucial tool for finding solutions?
Pythagorean theorem
Law of cosines
Unit circle
Sine rule
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why can't we find an angle for cosine when the value is greater than -1?
It is not a real number
It is not a valid trigonometric function
It is outside the range of the unit circle
It is undefined in mathematics
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a valid solution for cosine of X equals zero?
π
2π
π / 2
π / 4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the distance between the angles where cosine of X equals zero?
π / 2
π / 4
π
2π
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