Geometry Unit 4 Trigonometry and Similarity

Front

What is the definition of sine in a right triangle?

Back

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

Front

What is the definition of cosine in a right triangle?

Back

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

Front

What is the definition of tangent in a right triangle?

Back

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

Front

What does the SSS similarity criterion state?

Back

If three sides of one triangle are proportional to three sides of another triangle, then the triangles are similar.

Front

What does the SAS similarity criterion state?

Back

If two sides of one triangle are proportional to two sides of another triangle and the included angles are equal, then the triangles are similar.

Front

What does the AA similarity criterion state?

Back

If two angles of one triangle are equal to two angles of another triangle, then the triangles are similar.

Front

How do you find the coordinates of a point after dilation?

Back

Multiply the coordinates of the point by the scale factor.

Front

What is the formula for the sine ratio?

Back

sin(θ) = opposite/hypotenuse.

Front

What is the formula for the cosine ratio?

Back

cos(θ) = adjacent/hypotenuse.

Front

What is the formula for the tangent ratio?

Back

tan(θ) = opposite/adjacent.