How to evaluate for the cosine of an angle using the half angle formula

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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
In which quadrant is the angle U located based on the given constraint?
Fourth Quadrant
Third Quadrant
Second Quadrant
First Quadrant
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the value of the tangent of U?
-8/5
8/5
-5/8
5/8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the hypotenuse calculated in this scenario?
Using the tangent function
Using the Pythagorean theorem
Using the cosine function
Using the sine function
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the expression for the cosine of U?
8 / sqrt 89
5 / sqrt 89
sqrt 89 / 5
sqrt 89 / 8
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the final simplified form of the cosine of U divided by two?
89 + 8 sqrt 89 / 178
8 + sqrt 89 / 178
8 sqrt 89 + 89 / 178
sqrt 89 + 8 / 178
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