How do you calculate the angle using the sine function?

To find an angle using the sine function, use the inverse sine function: $$C = \text{sin}^{-1}igg(\frac{Opposite}{Hypotenuse}igg)$$ .

What is the value of sin(30 degrees)?

The value of sin(30 degrees) is $$\frac{1}{2}$$ .

What is the value of cos(60 degrees)?

The value of cos(60 degrees) is $$\frac{1}{2}$$ .

What is the value of tan(45 degrees)?

The value of tan(45 degrees) is 1.

What is the relationship between sine and cosine for complementary angles?

For complementary angles, $$\text{sine}(A) = \text{cosine}(90^\text{o} - A)$$ .

What is the hypotenuse in a right triangle?

The hypotenuse is the longest side of a right triangle, opposite the right angle.

What is the definition of an angle in standard position?

An angle in standard position has its vertex at the origin and its initial side along the positive x-axis.

What is the unit circle and its significance in trigonometry?

The unit circle is a circle with a radius of 1 centered at the origin of a coordinate plane, used to define trigonometric functions for all angles.

Right Triangle Trigonometry Flashcard Flashcards

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is the definition of a right triangle?

Back

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

2.

FLASHCARD QUESTION

Front

What is the Pythagorean theorem?

Back

3.

FLASHCARD QUESTION

Front

What is the sine function in a right triangle?

Back

4.

FLASHCARD QUESTION

Front

What is the cosine function in a right triangle?

Back

5.

FLASHCARD QUESTION

Front

What is the tangent function in a right triangle?

Back

6.

FLASHCARD QUESTION

Front

How do you find the length of a side in a right triangle using trigonometric ratios?

Back

7.

FLASHCARD QUESTION

Front

What is the relationship between the angles in a right triangle?

Back

The sum of the angles in any triangle is 180 degrees. In a right triangle, the two non-right angles must sum to 90 degrees.

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