What is the value of sin 30°?

The value of sin 30° is $$\frac{1}{2}$$ .

What is the value of cos 60°?

The value of cos 60° is $$\frac{1}{2}$$ .

What is the opposite side if the hypotenuse is 10 and angle A is 30°?

Using the sine definition: @@ ext{sin } 30° = rac{opposite}{10} ightarrow opposite = 10 imes rac{1}{2} = 5@@.

What is the adjacent side if the hypotenuse is 10 and angle A is 60°?

Using the cosine definition: @@ ext{cos } 60° = rac{adjacent}{10} ightarrow adjacent = 10 imes rac{1}{2} = 5@@.

What is the tangent of an angle if the opposite side is 6 and the adjacent side is 8?

Using the tangent definition: $$\text{tan } A = \frac{6}{8} = \frac{3}{4}$$ .

What is the sine of an angle if the opposite side is 7 and the hypotenuse is 25?

Using the sine definition: $$\text{sin } A = \frac{7}{25}$$ .

What is the cosine of an angle if the adjacent side is 12 and the hypotenuse is 13?

Using the cosine definition: $$\text{cos } A = \frac{12}{13}$$ .

Trig Ratio Basics Flashcards

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15 questions

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1.

FLASHCARD QUESTION

Front

What is the definition of cosine (cos) in a right triangle?

Back

2.

FLASHCARD QUESTION

Front

What is the definition of sine (sin) in a right triangle?

Back

3.

FLASHCARD QUESTION

Front

What is the definition of tangent (tan) in a right triangle?

Back

4.

FLASHCARD QUESTION

Front

What is the relationship between sine, cosine, and tangent?

Back

5.

FLASHCARD QUESTION

Front

What is the Pythagorean theorem?

Back

6.

FLASHCARD QUESTION

Front

If the adjacent side is 4 and the hypotenuse is 5, what is cos A?

Back

7.

FLASHCARD QUESTION

Front

If the opposite side is 3 and the adjacent side is 4, what is tan A?

Back

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