The video tutorial explains how to calculate the area of a triangle using both the basic formula and an alternative method involving two sides and the angle between them. It provides step-by-step guidance on using the sine rule to find missing sides and demonstrates how to apply these concepts to solve complex problems. The tutorial emphasizes the importance of showing all work for full credit and offers a detailed example to illustrate the process.

What is the basic formula for calculating the area of a triangle?

• Base multiplied by height

• Base multiplied by width

• Length multiplied by width

• Perimeter divided by two

When the perpendicular height is not available, what additional information is needed to calculate the area of a triangle?

• Two angles and a side

• Two sides and the angle between them

• Three sides

• The perimeter

In the example provided, what was the calculated area of the triangle using the alternative method?

• 35 cm²

• 10 cm²

• 4.82 cm²

• 50 cm²

What is the first step in using the sine rule to find a missing side in a triangle?

• Calculate the area

• Label the sides and angles

• Use the cosine rule

• Find the perimeter

What was the final calculated area of the triangle after using the sine rule to find the missing side?

• 50 cm²

• 200 cm²

• 143.8 cm²

• 100 cm²