Answer:
9.2
Step-by-step explanation:
S.A.S.→Law of Cosines
a^2=b^2+c^2-2bc\cos A
From reference sheet.
h^2 = 9.2^2+1.4^2-2(9.2)(1.4)\cos 84
=84.64+1.96−2(9.2)(1.4)(0.104528)
Square and find cosine.
h^2 = 84.64+1.96-2.69265
h
2
=84.64+1.96−2.69265
Multiply.
h^2 = 83.90735
h
2
=83.90735
Add.
h=
83.90735
≈9.16≈9.2
