Triangle Trig and Unit Circle (degrees only)

Front

What is the sine ratio in a right triangle?

Back

In a right triangle, the sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

What is the cosine ratio in a right triangle?

Back

In a right triangle, the cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

What is the tangent ratio in a right triangle?

Back

In a right triangle, the tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the value of sin 40 degrees?

Back

Approximately 0.6428.

Front

What is the value of cos 40 degrees?

Back

Approximately 0.7660.

Front

What is the value of tan 40 degrees?

Back

Approximately 0.8391.

Front

What is the value of cos 135 degrees?

Back

-√2/2.

Front

What is the value of tan 210 degrees?

Back

-√3/3.

Front

What is the value of tan 90 degrees?

Back

Undefined.

Front

What is the value of tan 225 degrees?

Back

-1.