Trigonometry

Front

What is the definition of sine 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 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 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

How do you find the inverse of sine on a calculator?

Back

Use the 'sin-1' or 'arcsin' function.

Front

How do you find the inverse of cosine on a calculator?

Back

Use the 'cos-1' or 'arccos' function.

Front

How do you find the inverse of tangent on a calculator?

Back

Use the 'tan-1' or 'arctan' function.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is the value of sin(30°)?

Back

sin(30°) = 1/2.

Front

What is the value of cos(60°)?

Back

cos(60°) = 1/2.

Front

What is the value of tan(45°)?

Back

tan(45°) = 1.