Law of Sines and Cosines Review

Which of the following should be used first in order to solve the triangle?

• Law of Sines

• Law of Cosines

• Pythagorean Theorem

• This triangle is unsolvable.

Which of the following should be used first in order to solve the triangle?

• Law of Sines

• Law of Cosines

• Pythagorean Theorem

• This triangle is unsolvable.

Which of the following should be used first in order to solve the triangle?

• Law of Sines

• Law of Cosines

• Pythagorean Theorem

• This triangle is unsolvable.

Which of the following should be used first in order to solve the triangle?

• Law of Sines

• Law of Cosines

• Pythagorean Theorem

• This triangle is unsolvable.

Find c.  Round to the nearest tenth.

Find a. Round to the nearest tenth.

A regular hexagon has side lengths of 15 cm and interior angles that each measure 120⁰. Find FB.

• 25.98 cm

• 21.21 cm

• 23.60 cm

• 18.82 cm

Find all possible values for angle B.

• 70 and 110

• 85 and 95

• 12 (168 does not fit)

• 20 (160 does not fit)

In ΔKFC, k = 40, c = 49, and m∠C = 32°.

Find all possible measurements for ∠K.

• 25.6 (154.4 does not fit)

• 40.5 and 139.5

• 33.1 (146.9 does not fit)

• The given measurements cannot form a triangle.

Find m∠B to the nearest tenth of a degree.