Oblique Triangle

Find the area of ABC to the nearest tenth.

• 62.3 units²

• 124.6 units²

• 77.0 units²

• 100 units²

Tags

CCSS.HSG.SRT.D.9

Solve each triangle. A=110, C=30, c=3

• B=40, a=5.64, b= 3.86

• B= 45, a= 6.93, b= 2.76

• B= 40, a= 7.90, b= 3.41

• B=40, a= 6.21, b= 3.86

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Parker must find the distance from Point A to Point B on opposite sides of a lake. He locates Point C that is 860 feet from point A and 175 feet from Point B. He measures the angle at Point C to be 78 degrees. Find the distance from point A to point B.

• 707643.58

• 841.22

• 877.62

• 842.01

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find Area of ABC

• 223.6 units²

• 73.1 units²

• 52.7 units²

• 3.3 units²

Tags

CCSS.HSG.SRT.D.9

Choose which law you need to solve the problem (DO NOT SOLVE):

• Law of Sines

• Law of Cosines

• Both

• Neither

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find AC

• 12

• 10

• 23

• 14

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Given: B = 70°, a = 11, C = 40° Find: c

• 11

• 7.5

• 70

• 8

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Solve the Triangle
a=38, b= 31, c= 35
Find A, B and C

• A= 43°, B= 47°, C= 90°

• A= 70°, B= 50.1°, C= 59.9°

• A= 50.1°, B= 70°, C= 59.9°

• A= 60°, B= 70°, C= 50°

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

• 52.1 sq cm

• 89.5 sq cm

• 47.6 sq cm

• 15.2 sq cm

Tags

CCSS.HSG.SRT.D.9

In triangle ABC, a = 5, b = 6, c = 7. Which law would you need to use first?

• Law of Sines

• Law of Cosines

• Both trig laws

• None of these

• Pythagorean Theorem

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11