Geometry 10th Honors Practice Flashcard

Front

What is the cosine of angle A if rounded to the nearest ten-thousandth?

Back

.4706

Front

What is the correct ratio for TanC?

Back

20/15

Front

If x is to be found, what is the value of x rounded to the nearest tenth?

Back

46.1

Front

What mnemonic helps remember trigonometric ratios?

Back

Soh Cah Toa

Front

Which side is adjacent to angle x in a triangle?

Back

3

Front

Define cosine in terms of a right triangle.

Back

Cosine is the ratio of the length of the adjacent side to the hypotenuse.

Front

Define tangent in terms of a right triangle.

Back

Tangent is the ratio of the length of the opposite side to the adjacent side.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the hypotenuse.

Front

What is the sine of an angle in a right triangle?

Back

Sine is the ratio of the length of the opposite side to the hypotenuse.

Front

How do you find the length of a side in a right triangle using trigonometric ratios?

Back

Use the ratios: sin(θ) = opposite/hypotenuse, cos(θ) = adjacent/hypotenuse, tan(θ) = opposite/adjacent.