1) Solve for Side A.
2) Solve for Angle B.
2 answers:
___________________________________
<h2>To find
</h2>
<h3>Given that: </h3>
<h3>Using cosine rule:</h3>
<h2>Now, to find
</h2>
___________________________________
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✍︎ C.Rose❀
Answer:
solution given;
let
AB=a
AC=b=30ft
AB=c=20ft
<A=115°
By using Cosine rule.
a²=b²+c²-2bc cos angle
a²=30²+20²-2*30*20 Cos 115°
a²=1807.1419
a=√[1807.1419]
a=42.51
Side A is 42.51ft.
Again
Cos B=
Cos B=
Cos B=0.7687
<B=Cos -¹(0.7687)
<B=39.46°
Angle B is 39.46
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