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

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

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

Back

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

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

What is the degree equivalent to $\frac{3\pi}{2}$ ? (DO NOT TYPE THE DEGREE SYMBOL)

Back

270

5.

FLASHCARD QUESTION

Front

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

Back

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

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

$\frac{2\pi}{k}$

10.

FLASHCARD QUESTION

Front

What is the Pythagorean identity for sine and cosine?

Back

$sin^2(x) + cos^2(x) = 1$

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