Finding Area of Triangle Using Sin

What is the formula for finding the area of a triangle using sine?

• a * b * sin(C)

• (1/2) * a * b * cos(C)

• (1/2) * a * b * tan(C)

• (1/2) * a * b * sin(C)

How can you use sine to find the area of a triangle?

• Using sine to find the perimeter instead of the area

• Multiplying the base by sine instead of the height

• Dividing the base by sine instead of multiplying by 0.5

• You can use sine to find the height of the triangle, and then use the formula for the area of a triangle: Area = 0.5 * base * height.

Find the exact area of the triangle

• 13.9 in²

• 13.8 in²

• 14.0 in²

• 27.9 in²

Find the area to the nearest tenth.

• A

• B

• C

• D

Mathematical Equivalence

OFF

Mathematical Equivalence

OFF

Mathematical Equivalence

OFF

Find the area to the nearest tenth.

• A

• B

• C

• D

Find QR

• 34.7 km

• 2.2 km

• 13.74

• 31.1 km