Question

Sa se calculeze tg2α,tg4α daca tgα=-3/4.

AM NEVOIE URGENT MULTUMESC FRUMOS!!

Answer 1

Salut,

$tg2a=\dfrac{2tga}{1-tg^2a},\;il\;ai\;pe\;tga,\;deci\;il\;po\c{t}i\;afla\;pe\;tg2a;\\\\tg4a=\dfrac{2tg2a}{1-tg^22a},\;il\;ai\;pe\;tg2a,\;deci\;il\;po\c{t}i\;afla\;pe\;tg4a.$

Te las pe tine să faci calculele ! Spor la treabă !

Green eyes.