Law of Sine and Cosine Word Problems

If you know the lengths of three sides to a triangle, what formula can you use to find an angle measure?

• Law of Sine

• Law of Cosine

• Law of Tangent

• Law of Sign

Find AB

• 10.03

• 8.04

• 6.10

• 4.93

What is the length of side x?

• 130 cm

• 112 cm

• 150 cm

• 105 cm

If you know the lengths of two sides and the angle between them, use this formula to find the side opposite the angle you know.

• Law of Sign

• Law of Cosine

• Law of Tangent

• Law of Sine

Find the measure of ∠A

• 18

• 28

• 25

• 24

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

What is the length of side x?

• 130 cm

• 112 cm

• 150 cm

• 105 cm