• Answer of this question

    How 2 Sin4x. 2cos^2x=4cos^2x.sin4x??
    Davneet Singh's image
    Davneet Singh

    Hello Shebin

    2 sin 4x . (2 cos2 x) = 2 × 2 × (sin 4x) (cos2 x)

                                    = 4 sin 4x cos2


    Written on Oct. 5, 2017, 11:22 a.m.