Module 18 Flashcard

Front

What is the side across from the right angle called?

Back

Hypotenuse

Front

Find tangent of θ if opposite side = 2 and adjacent side = 3.

Back

tan(θ) = 2/3

Front

Choose the correct ratio for sinZ if opposite side = 5 and hypotenuse = 13.

Back

sinZ = 5/13

Front

What does SOH-CAH-TOA stand for?

Back

SOH: Sine = Opposite/Hypotenuse, CAH: Cosine = Adjacent/Hypotenuse, TOA: Tangent = Opposite/Adjacent

Front

Solve for x in a right triangle where one angle is 30º and the other is 60º.

Back

x = 60º

Front

What is the formula for finding the hypotenuse in a right triangle?

Back

c = √(a² + b²) where c is the hypotenuse and a, b are the legs.

Front

If sinX = 5/13, what is cosX?

Back

cosX = 12/13 (using Pythagorean identity).

Front

What is the relationship between the sides of a 45-45-90 triangle?

Back

In a 45-45-90 triangle, the legs are equal and the hypotenuse is √2 times the length of a leg.

Front

What is the value of tan(45º)?

Back

tan(45º) = 1.

Front

If the opposite side is 8 and the adjacent side is 6, find the sine of the angle.

Back

sin(θ) = 8/10 = 4/5.