Let f(sin a) < 0 and f"(sin a) > 0vr e (0.5 and g(r) = f(sin a) + f(cos ). which of the following is/are not true? g(r) is decreasing in g or) g(c) increasing i

Let f(sin a) < 0 and f"(sin a) > 0Vr e (0.5 and g(r) = f(sin a) + f(cos ). Which of the following is/are NOT True? g(r) is decreasing in G or) g(c) increasing in (0, gx) is monotonically increasing in (o Ogc) is decreasing in (0, T/4)