Monday AMI 4/7

Front

What is the Law of Sines?

Back

Sin(A)/a = Sin(B)/b = Sin(C)/c

Front

What is the Law of Cosines?

Back

c² = a² + b² - 2ab * cos(C) (used to find a side when two sides and the included angle are known)

Front

Find the length of side AB if m

Back

8.0

Front

Find the length of side x if x is opposite a 28 degree angle and the side length given is 14 cm.

Back

7.44 cm

Front

What is the relationship between the angles and sides in a triangle according to the Law of Sines?

Back

The ratio of the length of a side to the sine of its opposite angle is constant.

Front

When would you use the Law of Cosines instead of the Law of Sines?

Back

Use the Law of Cosines when you have two sides and the included angle or all three sides.

Front

What does SOHCAHTOA stand for?

Back

Sine = Opposite/Hypotenuse, Cosine = Adjacent/Hypotenuse, Tangent = Opposite/Adjacent.

Front

If angle A = 30 degrees and side a = 10, what is the length of side b using the Law of Sines?

Back

b = (10 * Sin(B))/Sin(30) (requires angle B to solve)

Front

What is the sine of a 90 degree angle?

Back

1

Front

What is the cosine of a 0 degree angle?

Back

1