Question

tan a+cot a=sec a.cosec a
prove it
please help me

Answer 1

LHS = tan A + cot A 
= sin A / cos A  + cos A / sin A
= sin^2 A + cos^2 A / sin A * cos A
= 1 / sin A * cos A
= cosec A * sec A
= RHS

Hence, proved.

Answer 2

I hope it will help you.