Solving a Triangle

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of Tangents

If the sides of a triangle are 3, 4, and 5, what is the area?

• 6

• 6.28

• 12

• 3.14159

Find BC to the nearest whole number.

• A

• B

• C

• D

Find angle A, to the nearest tenth, if angle B = 19, a =51, and c = 61.

• 21

• 108.7

• 52.5

• 51

Solve the triangle. Round to the nearest tenth if necessary.

A=65, C=65, a=12

• B=50, b=9.9, c=12

• B=50, b=10.1, c=12

• B=70, b=12.8, c=12

• B=40 b=11.2, c=12

Find m<B, to the nearest degree.

• A

• B

• C

• D

What is the measure of angle A to the nearest degree?

• 58 degrees

• 61 degrees

• 78 degrees

• 74 degrees

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of Tangent

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of Tangent

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of Tangent