Trig Ratios

Front

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

Back

sin(X) = Opposite side / Hypotenuse

Front

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

Back

cos(X) = Adjacent side / Hypotenuse

Front

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

Back

tan(X) = Opposite side / Adjacent side

Front

What is the relationship between the sides of a right triangle and the sine of an angle?

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 relationship between the sides of a right triangle and the cosine of an angle?

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 relationship between the sides of a right triangle and the tangent of an angle?

Back

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

Front

If angle A is 30 degrees, what is sin(A)?

Back

sin(30°) = 1/2

Front

If angle A is 45 degrees, what is cos(A)?

Back

cos(45°) = √2/2

Front

If angle A is 60 degrees, what is tan(A)?

Back

tan(60°) = √3

Front

In a right triangle, if the opposite side is 3 and the hypotenuse is 5, what is sin(X)?

Back

sin(X) = 3/5