Trigonometry - basics

Front

What is the definition of cosine in a right triangle?

Back

Cosine (cos) of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the definition of sine in a right triangle?

Back

Sine (sin) of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the definition of tangent in a right triangle?

Back

Tangent (tan) of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

Which ratio represents cos(C)?

Back

16/34

Front

Which ratio represents sin(P)?

Back

p/q

Front

Which ratio represents tan(X)?

Back

32/24

Front

What is the length of the hypotenuse in a right triangle with sides 16 and 30?

Back

34

Front

What is the relationship between sine and cosine?

Back

sin(θ) = cos(90° - θ) for any angle θ.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is the sine function for a 30° angle?

Back

sin(30°) = 1/2.