What is the coordinate point at $$\frac{4\pi}{3}$$ ?

$$\left(-\frac{1}{2},-\frac{\sqrt{3}}{2}\right)$$

Which angles are co-terminal to $$-\frac{\pi}{2}$$ ?

$$\frac{3\pi}{2}$$ , $$\frac{-5\pi}{2}$$

What is the formula for finding co-terminal angles?

Add or subtract multiples of 360 degrees or 2π radians.

What is the relationship between sine and cosine in a right triangle?

$$sin(\theta) = \frac{opposite}{hypotenuse}, cos(\theta) = \frac{adjacent}{hypotenuse}$$

What is the definition of amplitude in trigonometric functions?

The maximum distance from the midline to the peak or trough.

Trig Review! Flashcards

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15 questions

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1.

FLASHCARD QUESTION

Front

Back

2.

FLASHCARD QUESTION

Front

What is the amplitude of y = -3 cos 2x?

Back

3

3.

FLASHCARD QUESTION

Front

Identify the function: y=sinx or y=cosx?

Back

y=cosx

4.

FLASHCARD QUESTION

Front

Back

270

5.

FLASHCARD QUESTION

Front

Back

6.

FLASHCARD QUESTION

Front

What is the range of the sine function?

Back

[-1, 1]

7.

FLASHCARD QUESTION

Front

What is the period of the function y = sin(kx)?

Back

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