In a certain isosceles right triangle, the altitude to the hypotenuse has length 8. What is the area of the triangle?
See image below....
Area of the triangle on the right is 1/2 b h === 1/2 (8 tan 45)(8)
there are TWO of these triangles that make the larger isosceles right triangle .
So the total area is 2 * (1/2)(8 tan 45)(8) units2 <=========== You can finish