Trig Ratios quick check #!

Front

What is the definition of cosine in a right triangle?

Back

Cosine (cos) of an angle A is defined as the ratio of the length of the adjacent side to the length of the hypotenuse: cos(A) = \frac{b}{c}.

Front

What is the definition of sine in a right triangle?

Back

Sine (sin) of an angle B is defined as the ratio of the length of the opposite side to the length of the hypotenuse: sin(B) = \frac{a}{c}.

Front

What is the definition of tangent in a right triangle?

Back

Tangent (tan) of an angle B is defined as the ratio of the length of the opposite side to the length of the adjacent side: tan(B) = \frac{a}{b}.

Front

What is the relationship between sine and cosine?

Back

The sine and cosine functions are related by the Pythagorean identity: sin^2(A) + cos^2(A) = 1.

Front

How do you calculate cos(A) using the sides of a triangle?

Back

To calculate cos(A), use the formula: cos(A) = \frac{b}{c}, where b is the length of the adjacent side and c is the length of the hypotenuse.

Front

How do you calculate sin(B) using the sides of a triangle?

Back

To calculate sin(B), use the formula: sin(B) = \frac{a}{c}, where a is the length of the opposite side and c is the length of the hypotenuse.

Front

How do you calculate tan(B) using the sides of a triangle?

Back

To calculate tan(B), use the formula: tan(B) = \frac{a}{b}, where a is the length of the opposite side and b is the length of the adjacent side.

Front

What is the value of cos(0°)?

Back

The value of cos(0°) is 1.

Front

What is the value of sin(90°)?

Back

The value of sin(90°) is 1.

Front

What is the value of tan(45°)?

Back

The value of tan(45°) is 1.