Answer:
y =
Step-by-step explanation:
using the addition formula for sine
sin(x + y) = sinxcosy + cosxsiny
then
sinxcosy + cosxsiny = sinx + cosx
for the 2 sides to be equal , then
cosy = and siny =
y = ( ) =
and
thus y =
The answer would be seven point five
the answer is b
hope it helps you!!!!!!!!!!
The answer would be C. or D.