Question

if tan tita=1/2 and tan phi=1/3 then the value of tita +phi​

Answer 1

tan(a+b)=(tana + tanb)/(1-tanatanb)

given, tana=1/2 tan phi=1/3

so,

tan(a+phi)=(tana+tan phi)/(1-tanatan phi)

=>(tana+tan phi)=tan(a+phi)(1-tanatan phi)