Recall that:
sin(A + B) = sinAcosB + cosAsinB
Therefore:
sin11°cos19° + cos11°sin19° = sin(11° + 19°)
= sin30° = 0.5
I hope this explains it.
Answer:
Width
in
length
in
Step-by-step explanation:
let width
painting is
in taller than it is wide
length 
Perimeter of rectangle
(length+width)
Perimeter of painting 

width
in
length
n
Answer:
abcdefghijklmnopqrstuvwxyz now i know my abcs next time wont you sing with me
Step-by-step explanation:
now i know my abc next time wont you sing with me
Answer:
110 liters of water
Step-by-step explanation:
Let
x ----> liters of water
f(x) ----> the percent of the sat in the new mixture
we have

For 
substitute in the equation

solve for x

