Sin, Cos and Tan

Front

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

Back

Sine (sin) 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) 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) is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the formula to find the sine of an angle?

Back

sin(θ) = opposite/hypotenuse.

Front

What is the formula to find the cosine of an angle?

Back

cos(θ) = adjacent/hypotenuse.

Front

What is the formula to find the tangent of an angle?

Back

tan(θ) = opposite/adjacent.

Front

If sin(30°) = 0.5, what is the opposite side if the hypotenuse is 10?

Back

The opposite side is 5.

Front

If cos(60°) = 0.5, what is the adjacent side if the hypotenuse is 8?

Back

The adjacent side is 4.

Front

If tan(45°) = 1, what can you say about the opposite and adjacent sides?

Back

The opposite and adjacent sides are equal.

Front

What is the value of sin(90°)?

Back

sin(90°) = 1.