Trig Ratios

Front

What is the sine function used for in trigonometry?

Back

The sine function is used to find the ratio of the length of the opposite side to the length of the hypotenuse in a right triangle.

Front

What is the mnemonic to remember trigonometric ratios?

Back

Soh Cah Toa.

Front

How do you calculate Cos(A) if the adjacent side is 3 and the hypotenuse is 6?

Back

Cos(A) = Adjacent/Hypotenuse = 3/6 = 0.5.

Front

In a right triangle, which side is opposite to angle A?

Back

The side that is not adjacent to angle A and does not form angle A.

Front

What is the cosine function used for in trigonometry?

Back

The cosine function is used to find the ratio of the length of the adjacent side to the length of the hypotenuse in a right triangle.

Front

If you know the opposite side is 4 and the hypotenuse is 5, what is sin(A)?

Back

sin(A) = Opposite/Hypotenuse = 4/5 = 0.8.

Front

What does 'adjacent' mean in the context of a right triangle?

Back

The side that is next to the angle of interest and forms that angle.

Front

If the hypotenuse is 10 and the adjacent side is 8, what is Cos(A)?

Back

Cos(A) = Adjacent/Hypotenuse = 8/10 = 0.8.

Front

What is the tangent function used for in trigonometry?

Back

The tangent function is used to find the ratio of the length of the opposite side to the length of the adjacent side in a right triangle.

Front

If you are given the opposite side and adjacent side, which trig function should you use?

Back

Tangent.