Spring Semester Geometry Review

Front

What is the cosine ratio in a right triangle?

Back

The cosine ratio is defined as the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the equation of a circle with a radius of 3 centered at the origin?

Back

The equation is x² + y² = 9.

Front

How do you set up a cosine equation for a right triangle?

Back

The cosine equation is set up as cos(X) = adjacent/hypotenuse.

Front

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

Back

The lengths of the sides are proportional to the sine, cosine, and tangent of the angles.

Front

What is the sine ratio in a right triangle?

Back

The sine ratio is defined as the ratio of the length of the opposite side to the length of the hypotenuse.

Front

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

Back

Use the Pythagorean theorem: a² + b² = c², where c is the hypotenuse.

Front

What is the tangent ratio in a right triangle?

Back

The tangent ratio is defined as the ratio of the length of the opposite side to the length of the adjacent side.

Front

How do you calculate the distance using trigonometric ratios?

Back

Use the formula: distance = adjacent side / cos(angle) or distance = opposite side / sin(angle).

Front

What is the measure of a full circle in degrees?

Back

A full circle measures 360 degrees.

Front

How do you find the measure of an arc in a circle?

Back

The measure of an arc can be found using the central angle that subtends the arc.