Mathematics

Problem

If the sides of a right-angled triangle are in AP then the sines of the acute angles are (a)

\frac{3}{5}, \frac{4}{5}

(b)

\frac{1}{\sqrt{3}}, \sqrt{\frac{2}{3}}

(c)

\frac{1}{2}, \frac{\sqrt{3}}{2}

(d) none of these