Which function would you use to solve for the length b?
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Let's assume
reference angle =B
so,
opposite =b
adjacent=a
now, we can use tan
[tex]tan(B)=\frac{b}{a}[/tex]
now, we can solve for b
Multiply both sides by a
[tex]a*tan(B)=a*\frac{b}{a}[/tex]
[tex]b=a*tan(B)[/tex]
so, option-A...............Answer