Area Of Triangle
In this lesson, we are going to learn another formula for area of triangle using trigonometry.
In trigonometry, the area of a triangle can be found even when the perpendicular height is not given. This method is especially useful for non-right-angled triangles, where traditional base-and-height approaches may not be straightforward.
Related Lessons:
Area Of Triangle Formula
The area of triangle for trigonometry is:
\(\mathrm{Area\ of\ }\triangle\mathrm{ABC}=\frac{1}{2}ab\ SinC\)
When applying the formula, take note of the following:
- The angle must be in between the 2 sides
- Check your calculator if it is in the right mode (radian or degree)
Example
In this video, we are going to go thru one example on how to apply the area of triangle formula for trigonometry.