Area of triangles: 1/2 a*b sin(C)
Intros
Examples
Lessons
- Proof: Area of Triangle =
Using the given diagram, prove that the area of a triangle can be found by the equation
- Finding the Area of a Triangle Given 2 Sides and the Angle in Between
has side lengths =9cm, =12cm and =42°. Find the area of . Give your answer to 1 decimal place.
- Area of Isosceles Triangles
The area of an isosceles triangle is 42.25 . If =30°, find the length of in exact value.
- Area of Equilateral Triangles
An equilateral triangle has side length 4cm. Find its area and give your answer in exact value.
- Determining the Areas of Different Triangles
Find the area of the following triangle.
Find the area of the following right-angled triangle.