Sin, Cos and Tan

Front

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

Back

Sine (Sin) 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

Cosine (Cos) 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

Tangent (Tan) of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

If the opposite side is 15 and the hypotenuse is 17, what is Sin X?

Back

Sin X = 15/17.

Front

If the adjacent side is 12 and the hypotenuse is 13, what is Cos Y?

Back

Cos Y = 12/13.

Front

If the opposite side is 9 and the adjacent side is 12, what is Tan Z?

Back

Tan Z = 9/12 or 3/4.

Front

Which trigonometric function would you use if you have the opposite side and hypotenuse?

Back

Sine.

Front

Which trigonometric function would you use if you have the adjacent side and hypotenuse?

Back

Cosine.

Front

Which trigonometric function would you use if you have the opposite side and adjacent side?

Back

Tangent.

Front

In a right triangle, if angle A is 30 degrees, what is the value of Sin A?

Back

Sin 30° = 1/2.