(10+i)^2 = (in form a+bi)

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

In the figure below, segment ac is congruent to segment ab: triangle abc with a segment joining vertex a to point d on side bc. side ab is congruent to side ac which statement is used to prove that angle abd is congruent to angle acd? segment ad bisects angle cab. triangle acd is similar to triangle abd. segment ad is congruent to segment ac. angle cab is congruent to angle cba.

Iam at home. /: i am playing video games. translate the following statement into symbolic form.