number 8. two angles ,

Answer:
[tex]cos(B)=\frac{3}{2}[/tex]Step-by-step explanation:
∠A and ∠B are complementary because they are the two non-right angles of a right triangle. This means that sinA=cosB and sinB=cosA.
Therefore,
[tex]\begin{gathered} If\text{ sin\lparen A\rparen=}\frac{\sqrt{3}}{2} \\ Then, \\ cos(B)=\frac{\sqrt{3}}{2} \end{gathered}[/tex]