Question

Which is

tan
⁡
(
A
+
B
)
if
sin
⁡
A
=
−
4
5
with
270
∘
<
A
<
360
∘
and if

Answer 1

uugghhhh!!! , in most of the western world we write horizontally

this is what I got so far:
tan(A+B) if sinA = −45 with 270 ∘ < A< 360 ∘
and if

so it not complete, and btw, sinA = -45 makes no sense
did you mean sinA = -4/5 ??

- repost with proper format and complete question