Soumendu Majumdar
Last Activity: 6 Years ago
Dear Student,
The question doesn't clearly state what is being divided by tan A, still, I’ll try to solve it by dividing only 2cos A by tan A & the whole expression by tan A
Now
if only 2 cos A is being divided by tan A then it is
now by Pythagorean triplets, we know
so cos A =
so
Hence
Now if the whole expression is divided by tan A, then
the expression becomes
=
Hope it helps!