Finding Missing Sides and Angles Right Triangle Trig Review

Front

What is the Pythagorean theorem?

Back

Front

How do you find the length of a missing side in a right triangle?

Back

To find the length of a missing side in a right triangle, you can use the Pythagorean theorem if two sides are known, or use trigonometric ratios (sine, cosine, tangent) if an angle and one side are known.

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 angle using the tangent ratio?

Back

Front

What is the relationship between the sides and angles in a right triangle?

Back

In a right triangle, the angles and sides are related through trigonometric ratios. The larger the angle, the longer the opposite side relative to the adjacent side.

Front

How do you round an angle to the nearest tenth?

Back

To round an angle 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 to find the area of a right triangle?

Back

Front

What is the definition of a right triangle?

Back

A right triangle is a triangle that has one angle measuring 90 degrees. The side opposite the right angle is called the hypotenuse.