Question

In right triangle ABC, m2C = 90, M2A = 63, and AB = 10. If BC is represented by a, then which equation can be used to find a ?

Answer 1

`\begin{gathered} \sin 63^(\circ)=(a)/(10) \\ \Rightarrow a=10\sin 63^(\circ)=8.91 \end{gathered}`

Hence the correct option is A