Question

Prove that:-

Answer 1

\[\Large 1+tanAtan \frac{ A }{ 2 }=tanAcot \frac{ A }{ 2 }-1 = secA\]

Answer 2

@ganeshie8

Answer 3

try this :
http://www.algebra.com/algebra/homework/Trigonometry-basics/Trigonometry-basics.faq.question.552116.html

looks there is no easy way :o

Answer 4

pretty much straightforward method , thank you

Answer 5

yes if u manage to memorize all the countless trig identities :)

Answer 6

Yeah , there are like 30 identities believe me in trig