Precalc U1 Review

Which Law would you use?

• Law of Sines
• Law of Cosines
• Law of the Jungle
• Law of Gravity

What are the possible criteria for the Law of Cosines?

• SSA, SSS

• SSA, ASA

• SSS, SAS

• AAS, ASA

Find AB.

• A
• B
• C
• D

Find m<B to the nearest degree.

• A
• B
• C
• D

Solve for x. Round the answer to the nearest hundredth.

• 3.85

• 4.25

• 3.35

• 5.65

Find the area of the triangle. Round your answer to 1 decimal place..

• 16.8 cm²

• 15.7 cm²

• 11.5 cm²

• 11.4 cm²

The area of a triangle is 100. If c=20 and the measure of angle a is 30, what is b equal to?

• 20
• 20(squareroot 3)
• 500
• 10 (squareroot 2)

• 1245.87 square meters

• 3288.92 square meters

• 3500 square meters

• 6577.85 square meters

The vectors have magnitudes of 17 and 28 and the angle between them is 66°. Determine the magnitude of the resultant.

Give your answer to 1 decimal place, leave out the units.