Non right angle triangle area rule

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Mathematics

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8th - 12th Grade

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Hard

SAMER RIZK

Used 2+ times

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4 Slides • 0 Questions

Area Rule in non right angle triangles

To find the area of any non right angle triangle you need to know 2 sides and included angle, he same requirements of cosine rule to be used.

Area of a triangle=

$\frac{1}{2}a\times b\times\sin C$
$\frac{1}{2}a\times c\times\sin B$
$\frac{1}{2}b\times c\times\sin A$

Find the area of the triangle shown

$\frac{\frac{1}{2}\times15\times22\times\sin45}{ }$
$116.67$

Area Rule in non right angle triangles

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