an isoceles triangle given the base and a leg whose measure are 4cm and 3cm respectively?
If you are trying to find the area of the triangle you could use trig to find the height of the triangle and then use the formula 1/2 base x height.
So draw the Isoceles triangle with each leg 3cm and the base 4cm
Draw a centre line forming two right angled triangles
find the angle of the lower corner of the triangle(it doesnt matter which one)
Using cos = adj/hyp
therefore cos = 2/3
then say sin(48.1896...)= h/3 to find the height
h= 2.236...
once the height is found multiply half base by height.
2x2.236...= 4.4721...