CU 9.4-9.5

Front

What is the definition of tangent (tan) in a right triangle?

Back

The ratio of the length of the opposite side to the length of the adjacent side.

Front

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

Back

The ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the definition of cosine (cos) in a right triangle?

Back

The ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the angle of elevation?

Back

The angle formed by a horizontal line and the line of sight to an object above the horizontal line.

Front

What is the angle of depression?

Back

The angle formed by a horizontal line and the line of sight to an object below the horizontal line.

Front

If the height of a tree is represented as 'h' and the distance from the tree is 'd', how can you express tan(θ)?

Back

tan(θ) = h/d, where θ is the angle of elevation.

Front

What is the relationship between sin, cos, and tan?

Back

tan(θ) = sin(θ)/cos(θ).

Front

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

Back

Height = distance * tan(angle of elevation).

Front

What is the formula for finding the length of a side using sine?

Back

sin(angle) = opposite/hypotenuse.

Front

What is the formula for finding the length of a side using cosine?

Back

cos(angle) = adjacent/hypotenuse.