Laws of Sine and Cosine

Which Law would you use?

• Law of Sines

• Law of Cosines

• Pythagorean Thereom

• Law of Gravity

Which Law would you use?

• Law of Sines

• Law of Cosines

• Pythagorean Thereom

• 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

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

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

• 12

• 40.65

• 19

• This triangle does not exist

If the sides of a triangle are 5, 12, and 13. What is the area?

• 25

• 30

• 35

• 40

Let a = 2.5, b = 1.6, and c = 1.9 be the sides of a triangle. Find the smallest angle?

• 39.79

• 38.79

• 39.97

• 38.97

If your calculator is in radian mode, you must:

• Buy a new calculator.

• Go home and ask for advice.

• Take Pre-calculus again next year.

• Start this quiz over in degree mode.