1) The area bounded by the curves y= cos x and y= sin x between the ordinates x=0 and x=3π2 is A) (4√2−2) sq.units B) (4√2+2) sq.units C) (4√2−1) sq.units D) (4√2+1) sq. units Answer: Option AExplanation: Required area ∫π40(cosx−sinx)dx+∫5π/4π/4(sinx−cosx)dx ∫3π/25π/4(cosx−sinx)dx =[sinx+cosx]π/40+[−cosx−sinx]5π/4π/4+[sinx+cosx]3π/45x/4 = (4√2−2) sq.units