Trig Ratios

Front

What is the definition of Trigonometry?

Back

Trigonometry is a branch of mathematics that studies the relationships between the angles and sides of triangles.

Front

What are the three primary trigonometric ratios?

Back

Sine (sin), Cosine (cos), and Tangent (tan).

Front

What is the formula for Sine?

Back

Sine = Opposite / Hypotenuse.

Front

What is the formula for Cosine?

Back

Cosine = Adjacent / Hypotenuse.

Front

What is the formula for Tangent?

Back

Tangent = Opposite / Adjacent.

Front

In a right triangle, what does the 'Hypotenuse' refer to?

Back

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

Front

What does 'Adjacent' mean in the context of a right triangle?

Back

Adjacent refers to the side next to the angle of interest, excluding the hypotenuse.

Front

What does 'Opposite' mean in the context of a right triangle?

Back

Opposite refers to the side opposite the angle of interest.

Front

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

Back

By dividing the length of the side opposite the angle by the length of the hypotenuse.

Front

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

Back

By dividing the length of the side adjacent to the angle by the length of the hypotenuse.