How to use the law of sines to find the missing parts of a triangle

The video tutorial explains how to solve a triangle problem using the Law of Sines. It begins by introducing the Law of Sines and its formula. The instructor then demonstrates how to find the length of side B by cross-multiplying and using given angle measures. Next, the video covers calculating angle A using the triangle angle sum property. Finally, the tutorial shows how to find the length of side A and verifies the results to ensure they are reasonable.

What is the Law of Sines used for in this problem?

• To determine the type of triangle

• To solve for unknown angles and sides in a triangle

• To find the area of a triangle

• To calculate the perimeter of a triangle

Which method is used to solve the proportion for side B?

• Graphing

• Substitution

• Cross multiplication

• Elimination

What is the calculated length of side B?

• 10.00

• 45.00

• 11.05

• 36.50

How is angle A determined in the triangle?

• By using the Law of Cosines

• By subtracting the known angles from 180 degrees

• By measuring directly

• By using the Pythagorean theorem

What is the value of angle A?

• 10 degrees

• 35 degrees

• 45 degrees

• 135 degrees

Which side length is used as a reference to find side A?

• None of the above

• Side B

• Side C

• Side A

What is the final calculated length of side A?

• 11.05

• 36.50

• 45.00

• 10.00