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Module 1: Trigonometry 1

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The area of a triangle

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XSIQ
*

Core Mathematics - The area of a triangle

The area of a triangle

We know that for any triangle

However the perpendicular height of the triangle is not always known. In
these cases we can use trigonometry to find the area.

or if other values of the triangle are known:

Find the area of triangle ABC:

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