1.The value of tan(cos−1(4/5)+tan−1(2/3))\tan (\cos^{-1} (4/5) + \tan^{-1} (2/3))tan(cos−1(4/5)+tan−1(2/3)) isa.617\frac{6}{17}176b.716\frac{7}{16}167c.167\frac{16}{7}716d.176\frac{17}{6}617Login to continueOnly logged in users canattempt or see the solution.