Question

Simplify, using trigonometric tables
$\sin {30}^{\circ }{30}^{\prime }+\cos {40}^{\circ }{20}^{\prime }$

Answer 1

$\sin 30°{30}^{\prime }+\cos 40°{20}^{\prime }$

$=0.5075+0.7623$

$=1.2698$

Hence, the answer is $\mathrm{1.2698.}$