Find the area of an oblique triangle using a formula

The video tutorial explains how to find the area of an oblique triangle using a specific formula. It begins with setting up a triangle with given angles and sides, then applies the formula involving the sine of an angle and the lengths of two sides. The tutorial demonstrates the calculation process step-by-step, ensuring the correct mode is used for trigonometric functions, and concludes with the final area result.

What is the first step in finding the area of an oblique triangle when the height is unknown?

• Break it into two right triangles

• Use the Pythagorean theorem

• Apply the sine rule

• Directly use base times height

Which elements are necessary to calculate the area of an oblique triangle using the discussed formula?

• Two angles and one side

• Three angles

• One angle and two sides

• Three sides

What is the role of the sine function in the area calculation of an oblique triangle?

• To find the height

• To find the base

• To find the hypotenuse

• To find the perimeter

In the calculation process, what is the result of multiplying 1/2, 62, and 20?

• 1240

• 620

• 930

• 310

What is the final calculated area of the triangle in the example?

• 620

• 310

• 474.9

• 930