
Trig Review
Flashcard
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the definition of inverse trigonometric functions?
Back
Inverse trigonometric functions are functions that determine the angle whose trigonometric ratio is a given number. They include arcsin, arccos, and arctan.
2.
FLASHCARD QUESTION
Front
How do you convert degrees to radians?
Back
To convert degrees to radians, multiply the degree measure by π/180.
3.
FLASHCARD QUESTION
Front
What is the value of sin(45°)?
Back
sin(45°) = √2/2.
4.
FLASHCARD QUESTION
Front
What is the value of cos(45°)?
Back
cos(45°) = √2/2.
5.
FLASHCARD QUESTION
Front
What is the Pythagorean identity for sine and cosine?
Back
sin²(θ) + cos²(θ) = 1.
6.
FLASHCARD QUESTION
Front
How do you find the cosine of an angle given a point on the terminal side?
Back
If (x, y) is a point on the terminal side of angle θ, then cos(θ) = x/r, where r = √(x² + y²).
7.
FLASHCARD QUESTION
Front
What is the reference angle for 225°?
Back
The reference angle for 225° is 45°.
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