Express the area A of an isosceles right triangle as a function of the length x of one of the two equal sides
neeed help!!!plz and ty..

Question

Express the area A of an isosceles right triangle as a function of the length x of one of the two equal sides
neeed help!!!plz and ty..

anonymous · Answer

ok so what do we know about isosceles triangles? They have two equal sides and two equal angles.
So take a triangle like this |dw:1338856140196:dw|
So if given two sides of a triangle and an angles, what formula can we use to find area?
1/2(absinC) 
This drawing should help you in using the formula above |dw:1338856257711:dw|
So C is the angle between a and b while a and b are the sides of the triangle, c being the base.
So use the first triangle I gave you and just use the formula I gave you.
Can you go on from there?