Trig Ratios - Identifying

Front

What is the definition of sine (sin) in a right triangle?

Back

The sine of an angle is 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 cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

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

Back

The tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the formula for finding sinA if opposite = 12 and hypotenuse = 37?

Back

Front

What is the formula for finding cosA if adjacent = 9 and hypotenuse = 41?

Back

Front

What is the formula for finding tanA if opposite = 12 and adjacent = 9?

Back

Front

Back

Front

What is the relationship between sine and cosine in a right triangle?

Back

Sine and cosine are complementary; sin(90° - A) = cos(A).

Front

What is the Pythagorean theorem?

Back

Front

If the hypotenuse is 50 and one side is 30, what is the length of the other side?

Back