Respuesta:
[tex]cos_{a}[/tex]=[tex]\frac{\sqrt{3} }{2}[/tex]
Explicación paso a paso:
[tex]sen_{a}}=\frac{co}{h}\\ sen_{a}} =\frac{1}{2} \\\frac{co}{h}=\frac{1}{2}[/tex]
[tex]cos_{a} =\frac{ca}{h} \\\frac{ca}{h} =\frac{x}{2}[/tex]
[tex]h^{2} =co^{2} +ca^{2} \\2^{2} =1^{2} +x^{2} \\4-1=x^{2} \\3=x^{2} \\\sqrt{3} =x[/tex]
[tex]cos_{a} =\frac{ca}{h} \\cos_{a} =\frac{\sqrt{3} }{2} \\[/tex]
