If cos(37)=x/14, what is the value of x?

x = 14 * cos(37) (use calculator for numerical value)

If tan(37)=x/14, what is the value of x?

x = 14 * tan(37) (use calculator for numerical value)

Find the length of side w if the opposite side is 18.0 cm and the hypotenuse is 21.4 cm.

Use Pythagorean theorem: w = $$\frac{21.4^2 - 18.0^2}{2}$$ (calculate for w)

What is the Pythagorean theorem?

In a right triangle, $$a^2 + b^2 = c^2$$ where c is the hypotenuse.

What is the relationship between the sides of a 30-60-90 triangle?

The sides are in the ratio 1: $$\frac{\text{√3}}{2}$$ :2.

What is the relationship between the sides of a 45-45-90 triangle?

The sides are in the ratio 1:1: $$\text{√2}$$ .

How do you find the angle using inverse trigonometric functions?

Use $$sin^{-1}(x)$$ , $$cos^{-1}(x)$$ , or $$tan^{-1}(x)$$ to find the angle.

What is the definition of a right triangle?

A triangle with one angle measuring 90 degrees.

Right Triangle Trigonometry Flashcards

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is the ratio for Cosine?

Back

Adj/Hyp

2.

FLASHCARD QUESTION

Front

What is the ratio for Sine?

Back

Opp/Hyp

3.

FLASHCARD QUESTION

Front

What is the ratio for Tangent?

Back

Opp/Adj

4.

FLASHCARD QUESTION

Front

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

Back

5.

FLASHCARD QUESTION

Front

What is the cosine of angle C if the adjacent side is 24 and the hypotenuse is 25?

Back

6.

FLASHCARD QUESTION

Front

What is the tangent of angle C if the opposite side is 7 and the adjacent side is 24?

Back

7.

FLASHCARD QUESTION

Front

If sin(37)=x/14, what is the value of x?

Back

x = 14 * sin(37) (use calculator for numerical value)

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