Alg2 Unit 8 Test - Law of Sines/Cosines

1.What is the length of side x?

Round to the nearest hundredth.

Tags

CCSS.HSG.SRT.C.8

2. Find: a (the side length, round to nearest tenth)

angle β = 70°

c = 11

angle α = 40°

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

3. How many triangles does the following form?

α=124°

a=1

b=2

• 0

• 1

• 2

• Infinite

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

4. Name the smallest angle in this triangle.

• ∠A

• ∠B

• ∠C

Tags

CCSS.HSG.CO.C.10

Find the measure of angle alpha (α). Round to the nearest tenth

[the angle at the 'top']

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Solve for side b

angle α = 95^∘

angle β = 45^∘

a = 5

• 3.55

• 3.22

• 4.12

• 4.89

• none of these are correct

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Solve for x

Round to the nearest hundredth

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

• 13 meters

• 14 meters

• 15 meters

• 16 meters

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

In a triangle, you know two angles and one side. Which law would you use to find a side opposite one of the known angles?

• Law of Sines

• Law of Cosines

• Both Law of Sines and Law of Cosines

• Neither

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11