Question

if
a 3,b= 4,c=5, then cos(alpha +beta) /2=?​

Answer 1

$\huge\mathcal\colorbox{purple}{{\color{white}{ᴀɴSᴡᴇƦ~~~↓}}}$

$\large{\frac{3}{5 } } \\ \\ \frac{4}{5} \\ \\ \frac{24}{25} \\ \\ \frac{12}{25}$

$\huge\mathcal\colorbox{pink}{{\color{white}{Hope it helps }}}$