Law of Sines Law of Cosine

Which Law would you use?

• Law of Sines

• Law of Cosines

• Law of the Jungle

• Law of Gravity

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find the exact area of the triangle

• 13.9 in²

• 13.8 in²

• 14.0 in²

• 27.9 in²

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CCSS.HSG.SRT.D.9

If you know the lengths of three sides to a triangle, what formula can you use to find an angle measure?

• Law of Sine

• Law of Cosine

• Law of Tangent

• Law of Sign

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

If you know the lengths of two sides and the angle between them, use this formula to find the side opposite the angle you know.

• Law of Sign

• Law of Cosine

• Law of Tangent

• Law of Sine

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What is the length of side x?

• 130 cm

• 112 cm

• 150 cm

• 105 cm

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Solve the Triangle
B= 85°, C= 47°, and a=19
Find A, b, and c

• A= 48°, b=25.5, c= 17.8

• A= 48°, b= 19.5, c= 23.4

• A= 90°, b= 14, c= 23.6

• A= 39°, b= 19, c= 19√2

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Solve the Triangle
a=38, b= 31, c= 35
Find A, B and C

• A= 43°, B= 47°, C= 90°

• A= 70°, B= 50.1°, C= 59.9°

• A= 50.1°, B= 70°, C= 59.9°

• A= 60°, B= 70°, C= 50°

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What is the measure of angle A?

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Find the length of Side BC.

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

Two stakes are holding a small blimp in place. Stake A measures an angle of elevation of 49^o and Stake B measures an angle of elevation of 58^o. If the string attached to Stake A has a length of 148 feet, what is the length of the string attached to Stake B? Round to the nearest tenth.

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11