I think that is the answer to your question if not I'll figure it out
Question
Answer:
Therefore
m∠Y = 41.1°
Step-by-step explanation:
Given:
In Δ YSE ,
m∠S = 70°
YE = 10 = side opposite to ∠Y
SE = 7 = side opposite to ∠S
To Find:
m∠Y = ?
Solution:
In Δ ABC, Sine Rule says
So here In Δ YSE,
substituting the given values we get

Therefore
m∠Y = 41.1°
X^2+3x
(3/2)^2=9/4 must be added to complete the square