if tan theta 1/2 and tan phi 1/3, if tan theta 1/2, if tan theta 1/2 and tan 1/3, 1 tan 2 theta, 1 + tan 2 theta, tan 2 theta + 1 sec 2 theta, if sin theta -1/root 2 and tan theta 1, 1 tan 2 theta formula
if tan theta 1/2. There are any references about if tan theta 1/2 in here. you can look below.
if tan theta 1/2 and tan phi 1/3
if tan theta 1/2
if tan theta 1/2 and tan 1/3
1 tan 2 theta
1 + tan 2 theta
tan 2 theta + 1 sec 2 theta
if sin theta -1/root 2 and tan theta 1
1 tan 2 theta formula
if tan theta 1/2 and tan phi 1/3, if tan theta 1/2, if tan theta 1/2 and tan 1/3, 1 tan 2 theta, 1 + tan 2 theta, tan 2 theta + 1 sec 2 theta, if sin theta -1/root 2 and tan theta 1, 1 tan 2 theta formula
