Caloulate the area of common interior. of r = 2 sin Sand :- = 2 cos 6. (a) or _ (b) '5 " 1 (d) "E " 2 {Bi None of mesa {C} '- State specifically what substitution needs to be made for x if this integral is to be evaluated using trigonometric substitution? (x +7) dx x2 - x - 6 NIU seco 5 cose + NIH A) B) (5 sece + 1 ) C) D) 5tan0 - 1