Sin Cos 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 Pythagorean theorem?

Back

In a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides: a² + b² = c².

Front

How do you find the angle using sine?

Back

To find an angle using sine, use the inverse sine function: angle = sin⁻¹(opposite/hypotenuse).

Front

How do you find the angle using cosine?

Back

To find an angle using cosine, use the inverse cosine function: angle = cos⁻¹(adjacent/hypotenuse).

Front

How do you find the angle using tangent?

Back

To find an angle using tangent, use the inverse tangent function: angle = tan⁻¹(opposite/adjacent).

Front

What is the relationship between sine and cosine?

Back

Sine and cosine are co-functions: sin(θ) = cos(90° - θ) and cos(θ) = sin(90° - θ).

Front

What is the sine of 30 degrees?

Back

The sine of 30 degrees is 0.5.

Front

What is the cosine of 60 degrees?

Back

The cosine of 60 degrees is 0.5.