Answer:
an = 2⋅3n − 1
Step-by-step explanation:
1/216 don’t forget to simplify
Where is the rest you cut it off
is the answer of the question
Solution:
(tanx + tany)/(1-tanxtany) is equal to the formula of tan(x+y)
sinxcosy + cosxsiny = is equal to the formula of sin(x+y)formula
cosxcosy - sinxsiny) = is equal to the formula of cos(x+y)
So this means that
tan(x+y) = sin(x+y)/cos(x+y)
