When given one obtuse angle use the law of sines to determine the missing measurements Ambiguous One

When given one obtuse angle use the law of sines to determine the missing measurements Ambiguous One

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial covers the concept of oblique triangles, focusing on obtuse angles and the application of the Law of Sines. It demonstrates solving for an angle using inverse sine and discusses the limitations of obtuse angles in triangles. The tutorial concludes with calculating a side length using cross multiplication.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of triangle is being discussed in the video?

Oblique triangle

Equilateral triangle

Right triangle

Isosceles triangle

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving for angle C using the Law of Sines?

Multiply the side lengths

Add the angles of the triangle

Use cross-multiplication

Subtract the known angles

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the calculated value of angle C in the triangle?

9.60 degrees

150 degrees

30 degrees

20.4 degrees

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it impossible to have more than one obtuse angle in a triangle?

Because obtuse angles are less than 90 degrees

Because obtuse angles are always equal

Because the sum of angles in a triangle is 180 degrees

Because triangles can only have right angles

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the remaining angle in a triangle if two angles are known?

Add the two known angles

Divide the sum of the known angles by 2

Subtract the sum of the known angles from 180 degrees

Multiply the two known angles

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the final step in solving for the side length of A using the Law of Sines?

Subtract the known side lengths

Divide the known side lengths

Add all side lengths

Use cross-multiplication and a calculator

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the calculated length of side A in the triangle?

9.60

30

20.91

10