Alg2 Un8Wk3 - Law of Sines Lesson/Review

Alg2 - Law of Sines

By Chip Krolik

Dropdown

Complete the formula: ​ ​Sin​

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/a = SinB/​

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= Sin​

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/​

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Multiple Choice

Use the Law of Sines to solve for BC

• 33
• 24
• 12
• 29

Multiple Choice

Find AB

• 10
• 8
• 6.1
• 4.9

Multiple Choice

Find AC

• 12
• 10
• 23
• 14

Multiple Choice

What is the measure of angle A?

• 58 degrees
• 61 degrees
• 78 degrees
• 74 degrees

Multiple Choice

Find the measure of angle C. Use law of sines.

• 44.3 degrees

• 51.4 degrees

• 37.2 degrees

• 40.1 degrees

Multiple Choice

Find the measure of angle B. Use the law of sines.

• 16 degrees

• 23 degrees

• 10 degrees

• 25 degrees

Multiple Choice

Find the measure of angle C. Use the law of sines.

• 61 degrees

• 34 degrees

• 53 degrees

• 41 degrees

Labelling

Solve the triangle.

Round to the nearest tenth.

Drag labels to their correct position on the image

72

17.9

62

10.2

52

10

16.8

9.7

15.9

Multiple Choice

Solve each triangle. A=40, B=20, a=2

• C=120, b=1.06, c=2.69
• C=135, b= 1.56, c=2.50
• C= 120, b=2.68. c=3.26
• C=45, b=1.06, c=2
• there is no triangle to solve

Multiple Choice

Find the area of the triangle.

• 88 square units
• 108 square units
• 63 square units
• 148 square units

Multiple Choice

Find Area of DEF

• 9.5
• 119.5
• 59.8
• 5.4

Multiple Choice

How many triangles can you make if A=53, b=6, and a=4?

• 0
• 1
• 2
• Infinitely many

Multiple Choice

How many triangles can you make if A=53, b=6, and a=5?

• 0
• 1
• 2
• Infinitely many

Multiple Choice

How many triangles can you make if A=53, b=6, and a=7?

• 0
• 1
• 2
• Infinitely many

Poll

After this review, I feel --- about using the Law of Sines to find the missing side, angle or find the area of a triangle

• very good/ very confident

• good/confident

• eh...so-so

• lost...I don't know what I am doing

• other: my thoughts/feelings are not listed here