A triangle has sides A, B, and C. The angle between sides A and B is #(pi)/2# and the angle between sides B and C is #pi/12#. If side B has a length of 7, what is the area of the triangle?
It is a right triangle with catheti
Knowing the length of
it follows that
Area of a triangle is
The latter can be simplified using a formula
from which follows:
Therefore, the area of a triangle is