Trigonometric Ratios

Front

What is the hypotenuse in a right triangle?

Back

The side opposite the right angle.

Front

What is the sine ratio?

Back

Opposite side over Hypotenuse (Opp/Hyp).

Front

What is the cosine ratio?

Back

Adjacent side over Hypotenuse (Adj/Hyp).

Front

What is the tangent ratio?

Back

Opposite side over Adjacent side (Opp/Adj).

Front

What is the relationship between sine and cosine?

Back

Sine and cosine are complementary functions; sin(θ) = cos(90° - θ).

Front

How do you find the sine of an angle in a right triangle?

Back

Divide the length of the opposite side by the length of the hypotenuse.

Front

How do you find the cosine of an angle in a right triangle?

Back

Divide the length of the adjacent side by the length of the hypotenuse.

Front

How do you find the tangent of an angle in a right triangle?

Back

Divide the length of the opposite side by the length of the adjacent side.

Front

What is the Pythagorean theorem?

Back

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

Front

What is the value of sin(30°)?

Back

1/2.