Determine if you need to apply ambiguous case or not

The video tutorial explains how to solve a triangle problem using the sine rule. It starts by setting up the problem with given angles and sides, then calculates angle C using a calculator. The tutorial explores a second case for angle C but concludes that only one case is valid due to the sum of angles exceeding 180 degrees.

What is the first step in setting up the equation to find angle C using the sine rule?

• Use the cosine rule

• Place the sines of angles over their opposite sides

• Subtract 180 from the given angle

• Cross-multiply the sides

How do you isolate the sine of angle C in the equation?

• Cross-multiply by 15 on both sides

• Add 15 to both sides

• Divide by 17 on both sides

• Subtract 82 from both sides

What function is used to find the angle from its sine value?

• Sine inverse

• Logarithm

• Tangent inverse

• Cosine inverse

What is the calculated value of angle C in degrees?

• 60.9 degrees

• 90 degrees

• 82 degrees

• 119 degrees

Why is only one solution for angle C valid in this problem?

• The sum of angles exceeds 180 degrees

• The triangle is not a right triangle

• The given angle is less than 90 degrees

• The sides are not proportional