Trigonometry Combined

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, a² + b² = c², where c is the hypotenuse.

Front

How do you find the missing angle in a right triangle?

Back

Use the sine, cosine, or tangent ratios, or apply the Pythagorean theorem.

Front

What is the sine rule?

Back

The sine rule states that a/sin(A) = b/sin(B) = c/sin(C) for any triangle.

Front

What is the cosine rule?

Back

The cosine rule states that c² = a² + b² - 2ab*cos(C) for any triangle.

Front

How do you convert degrees to radians?

Back

Multiply degrees by π/180.

Front

How do you convert radians to degrees?

Back

Multiply radians by 180/π.

Front

What is the range of the sine function?

Back

The range of the sine function is [-1, 1].