Unit 5 Retest

Front

What is a 45-45-90 triangle?

Back

Front

How do you find the length of the hypotenuse in a 45-45-90 triangle?

Back

Front

What is the sine ratio?

Back

Front

What is the cosine ratio?

Back

Front

What is the tangent ratio?

Back

Front

How do you calculate the height of an object using angles of elevation?

Back

To calculate the height of an object using angles of elevation, use the formula: Height = distance from the object * tan(angle of elevation).

Front

What is the relationship between the sides of a 30-60-90 triangle?

Back

Front

How do you round a number to the nearest tenth?

Back

To round a number to the nearest tenth, look at the hundredths place. If it is 5 or greater, round up the tenths place by one. If it is less than 5, keep the tenths place the same.

Front

What is the formula for the Pythagorean theorem?

Back

Front

What is the height of a lighthouse if a yacht is 90 feet away and the angle of elevation is 26 degrees?

Back

To find the height of the lighthouse, use the formula: Height = 90 * tan(26 degrees). This gives approximately 25 feet.