Law of Sines and Cosines

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 measure of angle A?

• 50 degrees
• 60 degrees
• 78 degrees
• 74 degrees

What is the length of side x?

• 130 cm
• 112 cm
• 150 cm
• 105 cm

Find the measure of ∠A

• 18
• 28
• 25
• 24

Clint is building a wooden swing set for his children.  Each supporting end of the swing set is to be an A-frame constructed with two 10 foot long 4-by-4s joined at a 45 degree angle.  To prevent the swing set form tipping over, Clint wants to secure the base of each A-frame to concrete footings.  How far apart should the footings for each A-frame be?

• 5.461 feet
• 9.743 feet
• 6 feet
• 7.65 feet

Jack is flying his kite.  He runs 100 feet away from his house and lets out 75 feet of string.  The angle of elevation from the ground to the kite is 65 degrees.  How far away is the kite from the house?

• 9285.73 ft
• 96.36 ft
• 24061.81 ft
• 155.12 ft

How many triangles can you make if <A=53⁰, b=6, and a=4?

• 0
• 1
• 2
• Infinitely many

How many triangles can you make if <A=53⁰, b=6, and a=5?

• 0
• 1
• 2
• Infinitely many

If the sides of a triangle are 12,5, and 2. What is the area?

• 12

• 40.65

• 19

• This triangle does not exist