Trig Ratios

Front

What is the cosine ratio (COS X) in a right triangle?

Back

The cosine ratio is defined as the length of the adjacent side divided by the length of the hypotenuse (COS X = Adj/Hyp).

Front

In a right triangle, which side is considered adjacent to angle A?

Back

The side that is next to angle A and is not the hypotenuse is considered adjacent to A.

Front

What is the hypotenuse in a right triangle?

Back

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

Front

What is the sine ratio (SIN X) in a right triangle?

Back

The sine ratio is defined as the length of the opposite side divided by the length of the hypotenuse (SIN X = Opp/Hyp).

Front

How do you identify the opposite side in relation to angle A in a right triangle?

Back

The opposite side is the side that is directly across from angle A.

Front

What is the relationship between the sides of a right triangle and the Pythagorean theorem?

Back

The Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides (a² + b² = c²).

Front

What is the tangent ratio (TAN X) in a right triangle?

Back

The tangent ratio is defined as the length of the opposite side divided by the length of the adjacent side (TAN X = Opp/Adj).

Front

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

Back

You can use the trigonometric ratios (sine, cosine, tangent) along with the known lengths of other sides or angles to find the unknown side lengths.

Front

What is the value of the cosine of 0 degrees?

Back

The cosine of 0 degrees is 1.

Front

What is the value of the sine of 90 degrees?

Back

The sine of 90 degrees is 1.