Area of Triangles Using Trig

Find the area of ABC to the nearest tenth.

• 62.3 units²

• 124.6 units²

• 77.0 units²

• 100 units²

What is the area of a triangle with two sides that measure 5 cm and 8 cm with an included angle of 39°?

• 15.9cm²

• 12.6cm²

• 15.3cm²

• 16.2cm²

Which area formula works for this triangle?

• ½(5)(7)cos(49⁰)

• (5)(7)sin(49⁰)

• ½(5)(7)sin(49⁰)

• all of these

Find Area of ABC

• 223.6 units²

• 73.1 units²

• 52.7 units²

• 3.3 units²

What is the area of the provided triangle?

• 66.24

• 132.49

• 41.58

• 81.36

Find the Area of ΔPQR:

• 6 km²

• 12 km²

• 608.6 km²

• 21.6 km²

Mathematical Equivalence

OFF

Mathematical Equivalence

OFF

Mathematical Equivalence

OFF

What is the area of a triangle with two sides that measure 6 m and 8 m with an included angle of 137°?

• 17.8m²

• 14.6m²

• 16.4m²

• 12.9m²