Answer: see proof below
<u>Step-by-step explanation:</u>
Given: A + B + C = π → A = π - (B + C)
→ B = π - (A + C)
→ C = π - (A + B)
Use Sum to Product Identity: sin A - sin B = 2 cos [(A + B)/2] · sin [(A - B)/2]
Use the following Cofunction Identity: cos (π/2 - A) = sin A
<u>Proof LHS → RHS:</u>
LHS: sin A - sin B + sin C
= (sin A - sin B) + sin C
-(-z + 3) equals z - 3
5 = z - 3
z = 8
P=2(w+l)
372=2(88+l)
372÷2=(88+l)
186-88= l
98= l
Hi! i think for this you set up two equations.
x=y
4+x+y=50
you can solve by substitution!! hope it helpes
It wont let me open it up :(