Answer:
A. Cos2x
Step-by-step explanation:
f(x) = sin(x)cos(x) = (1/2) sin(2x) using double angle formula.
f'(x) = ( (1/2)sin(2x) )' = 2(1/2)cos(2x) = cos(2x)
Since for the two triangles, the three pairs of corresponding sides are congruent, then the triangles are congruent and their areas are equal.
area = 4 square units
Do you mind typing the equation it looks incomplete.
