Trigonometry Equations

Front

What is the sine function in a right triangle?

Back

The sine function (sin) is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine function in a right triangle?

Back

The cosine function (cos) is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the tangent function in a right triangle?

Back

The tangent function (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

Front

What is the value of sin(45°)?

Back

@@rac{{ ext{1}}}{{ ext{√2}}} ext{ or } rac{{ ext{√2}}}{{ ext{2}}}$$.

Front

What is the value of cos(45°)?

Back

@@rac{{ ext{1}}}{{ ext{√2}}} ext{ or } rac{{ ext{√2}}}{{ ext{2}}}$$.

Front

What is the value of tan(45°)?

Back

1.

Front

How do you find the length of a side using the sine function?

Back

Use the equation: @@ ext{sin}( heta) = rac{{ ext{opposite}}}{{ ext{hypotenuse}}}$$.

Front

How do you find the length of a side using the cosine function?

Back

Use the equation: @@ ext{cos}( heta) = rac{{ ext{adjacent}}}{{ ext{hypotenuse}}}$$.

Front

How do you find the length of a side using the tangent function?

Back

Use the equation: @@ ext{tan}( heta) = rac{{ ext{opposite}}}{{ ext{adjacent}}}$$.