Finding Sides using Trig Ratios

Front

What is the ratio for Cosine?

Back

Front

What is the ratio for Sine?

Back

Front

What is the ratio for Tangent?

Back

Front

How do you find the missing side in a right triangle using Trig Ratios?

Back

You can use the sine, cosine, or tangent ratios depending on the sides you know. For example, if you know the angle and the hypotenuse, use sine or cosine to find the opposite or adjacent side.

Front

If sin(θ) = 0.5, what is the angle θ?

Back

The angle θ is 30 degrees.

Front

If cos(θ) = 0.8, what is the angle θ?

Back

The angle θ is approximately 36.87 degrees.

Front

If tan(θ) = 1, what is the angle θ?

Back

The angle θ is 45 degrees.

Front

What is the Pythagorean theorem?

Back

Front

How do you calculate the length of the hypotenuse?

Back

Front

What is the sine of a 90-degree angle?

Back

The sine of a 90-degree angle is 1.