Flashcard in Trigonometric Ratios

Front

What is the definition of sine (sin) in 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

What is the definition of cosine (cos) in 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

What is the definition of tangent (tan) in 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 formula for finding sinA if the opposite side is 36 and the hypotenuse is 45?

Back

sinA = opposite/hypotenuse = 36/45 = 4/5.

Front

What is the formula for finding cosP if the adjacent side is q and the hypotenuse is r?

Back

cosP = adjacent/hypotenuse = q/r.

Front

What is the formula for finding tanA if the opposite side is 36 and the adjacent side is 27?

Back

tanA = opposite/adjacent = 36/27.

Front

If sin(37) = x/14, what is the correct ratio for cos(37)?

Back

cos(37) = 14/x.

Front

How do you find the measure of a missing angle in a right triangle?

Back

Use the inverse trigonometric functions or the known angles and sides to calculate the missing angle.

Front

From angle C, which side is opposite to it if AB is the hypotenuse?

Back

The side opposite to angle C is the side that does not touch angle C.

Front

What is the relationship between the angles in a right triangle?

Back

The sum of the angles in a right triangle is always 180 degrees, with one angle being 90 degrees.