Six Trig Ratios

Front

What are the six trigonometric ratios?

Back

The six trigonometric ratios are: 1. Sine (sin) 2. Cosine (cos) 3. Tangent (tan) 4. Cosecant (csc) 5. Secant (sec) 6. Cotangent (cot)

Front

Define sine (sin) in terms of a right triangle.

Back

Sine (sin) of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

Front

Define cosine (cos) in terms of a right triangle.

Back

Cosine (cos) of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

Front

Define tangent (tan) in terms of a right triangle.

Back

Tangent (tan) of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

Front

What is the relationship between sine and cosecant?

Back

Cosecant (csc) is the reciprocal of sine (sin), so csc(a) = 1/sin(a).

Front

What is the relationship between cosine and secant?

Back

Secant (sec) is the reciprocal of cosine (cos), so sec(a) = 1/cos(a).

Front

What is the relationship between tangent and cotangent?

Back

Cotangent (cot) is the reciprocal of tangent (tan), so cot(a) = 1/tan(a).

Front

Back

Front

Back

Front

Calculate sin(A) if cos(A) = 0.4706.

Back