Respuesta:
y= -2,52268
Explicación paso a paso:
y=√20 Cos 230 + 1
y= √2*2 × 5 Cos (230)+1
(en la raíz es elevado a dos)
y=√2*2 √5 Cos (230) +1
(en la raíz (1) es elevado a dos)
y=2√5 Cos (230) +1
[tex]\frac{3\sqrt{5} +2}{2}[/tex]
[tex]y = \sqrt{20} Cos^{2} (30) +1[/tex]
[tex]Cos ( 30) = \frac{\sqrt{3} }{2}[/tex]
[tex]y = \sqrt{20} (\frac{\sqrt{3} }{2} )^{2} +1 = \sqrt{20} (\frac{3}{4} )+1[/tex]
[tex]y = \frac{3\sqrt{20} }{4} +1 = \frac{3\sqrt{20} +4}{4} = \frac{3\sqrt{4*5}+4 }{4}[/tex]
[tex]y = \frac{3(2)\sqrt{5}+4 }{4}=\frac{3\sqrt{5} +2}{2}[/tex]
[tex]y = \frac{3\sqrt{5} +2}{2}[/tex]
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Respuesta:
y= -2,52268
Explicación paso a paso:
y=√20 Cos 230 + 1
y= √2*2 × 5 Cos (230)+1
(en la raíz es elevado a dos)
y=√2*2 √5 Cos (230) +1
(en la raíz (1) es elevado a dos)
y=2√5 Cos (230) +1
y= -2,52268
Verified answer
Respuesta:
[tex]\frac{3\sqrt{5} +2}{2}[/tex]
Explicación paso a paso:
[tex]y = \sqrt{20} Cos^{2} (30) +1[/tex]
[tex]Cos ( 30) = \frac{\sqrt{3} }{2}[/tex]
[tex]y = \sqrt{20} (\frac{\sqrt{3} }{2} )^{2} +1 = \sqrt{20} (\frac{3}{4} )+1[/tex]
[tex]y = \frac{3\sqrt{20} }{4} +1 = \frac{3\sqrt{20} +4}{4} = \frac{3\sqrt{4*5}+4 }{4}[/tex]
[tex]y = \frac{3(2)\sqrt{5}+4 }{4}=\frac{3\sqrt{5} +2}{2}[/tex]
[tex]y = \frac{3\sqrt{5} +2}{2}[/tex]