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Triangle Area

Triangles HOME | Achievement Criteria | Pythagoras | Trigonometry | Area | Sin Rule | Cosine Rule | Revision

4



Area of triangles

Calculating the area of triangles using Triangle Area = 1/2abSinC

MR notes, Blank notes

p412 Ex 29.04

p134

Area of a triangle (java)

 
http://www.waldomaths.com/CosRule1NL.jsp
The rule for triangle area (A = 1/2 base x ht) can be adapted to triangles given an angle

http://www.mathopenref.com/trianglearea.html | Area of a triangle (java)

Height =?

Area using Sinθ

Label triangle

Mouse over key words

 

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