Exploring the Law of Sines

What is the Law of Sines used for in triangle solutions?

• To find the height of the triangle

• To calculate the area of the triangle directly

• To find missing sides and angles when two angles and one side are known

• To determine if a triangle is right-angled

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What does the Law of Sines formula relate in a triangle?

• The perimeter and the angles

• The sides and their opposite angles

• The angles and their adjacent sides

• The area and the angles

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What must be true for a triangle's angles when using the Law of Sines?

• They must sum up to 180 degrees

• They must be equal

• They must be all acute angles

• One angle must be right

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

In the Law of Sines, what scenario might lead to ambiguous results?

• Three angles given

• One angle and two sides given

• Two angles and one side given

• Three sides given

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

How many solutions are possible when two sides and an opposite angle are given in a triangle?

• It depends on the angle provided

• Three

• Two

• One

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CCSS.7.G.A.2

How do you determine the number of triangles possible when given two sides and an opposite angle?

• Using the Law of Sines and checking the sine values

• Using the Law of Cosines

• Calculating the sum of given angles

• Checking if the sum of angles exceeds 180 degrees

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What can cause two possible solutions in the Law of Sines?

• All sides given without any angles

• All angles given without any sides

• One angle and two sides given, with the angle being acute

• Two angles and one side given

Tags

CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What does an error in the calculator while using the Law of Sines indicate?

• The angles are too small

• The triangle does not exist

• The sides are too long

• The triangle is right-angled

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CCSS.HSG.SRT.D.10

CCSS.HSG.SRT.D.11

What is the area formula for an oblique triangle?

• Base times height divided by two

• Half the product of two sides times the sine of the included angle

• Sum of all sides divided by the sine of the largest angle

• Product of all sides divided by four times the sine of the smallest angle

Tags

CCSS.HSG.SRT.D.9

When calculating the area of an oblique triangle, what is necessary?

• The radius of the circumscribed circle

• The included angle between known sides

• The hypotenuse of the triangle

• The height of the triangle

Tags

CCSS.HSG.SRT.D.9