What is the cotangent function?

The cotangent function (cot) is the reciprocal of the tangent function: $$\text{cot}(A) = \frac{1}{\text{tan}(A)}$$ .

How do you find the angle using sine?

To find the angle A using sine, use the formula: $$A = \text{sin}^{-1}igg(\frac{\text{opposite}}{\text{hypotenuse}}igg)$$ .

How do you find the angle using cosine?

To find the angle A using cosine, use the formula: $$A = \text{cos}^{-1}igg(\frac{\text{adjacent}}{\text{hypotenuse}}igg)$$ .

How do you find the angle using tangent?

To find the angle A using tangent, use the formula: $$A = \text{tan}^{-1}igg(\frac{\text{opposite}}{\text{adjacent}}igg)$$ .

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

In a 30-60-90 triangle, the lengths of 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?

In a 45-45-90 triangle, the lengths of the legs are equal, and the hypotenuse is $$\text{leg} \times \text{√2}$$ .

What is the formula for finding the hypotenuse?

To find the hypotenuse (c) in a right triangle, use the Pythagorean theorem: $$c = \text{√}(a^2 + b^2)$$ .

What is the formula for finding the opposite side using sine?

To find the opposite side (a) using sine, use the formula: $$a = \text{sin}(A) \times \text{hypotenuse}$$ .

Right Triangle Trigonometry Review Flashcards

Student preview

15 questions

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1.

FLASHCARD QUESTION

Front

What is a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees.

Tags

CCSS.4.G.A.2

2.

FLASHCARD QUESTION

Front

What is the Pythagorean theorem?

Back

Tags

CCSS.8.G.B.8

3.

FLASHCARD QUESTION

Front

What is the sine function?

Back

The sine function (sin) is defined as the ratio of the length of the opposite side to the length of the hypotenuse in a right triangle.

Tags

CCSS.HSG.SRT.C.6

4.

FLASHCARD QUESTION

Front

What is the cosine function?

Back

The cosine function (cos) is defined as the ratio of the length of the adjacent side to the length of the hypotenuse in a right triangle.

Tags

CCSS.HSG.SRT.C.6

5.

FLASHCARD QUESTION

Front

What is the tangent function?

Back

The tangent function (tan) is defined as the ratio of the length of the opposite side to the length of the adjacent side in a right triangle.

Tags

CCSS.HSG.SRT.C.6

6.

FLASHCARD QUESTION

Front

What is the secant function?

Back

Tags

CCSS.HSF.TF.A.2

7.

FLASHCARD QUESTION

Front

What is the cosecant function?

Back

Tags

CCSS.HSF.TF.A.2

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