Chapter Nine:  
Right Triangle Trigonometry

Geometry   Notes

Chapter  9

Section  9.1
Section  9.2
Section  9.3
Section  9.4
Section  9.5

Geometry Contents

Take notes on the following topics.

Section 9-5  Trigonometry and Area

Theorem 9-1

The area of a triangle is one half the product of the lengths of two sides and the sine of the included angle.

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