Respuesta:
1) X = 60º
2)X= 30º
3)X= 90º
4) X= 30º
5) X= 71.57
Explicación paso a paso:
Solo es necesario despejar X
1) 2senx - [tex]\sqrt{3}[/tex] = 0
2senx = [tex]\sqrt{3}[/tex]
senx = [tex]\frac{\sqrt{3} }{2}[/tex] Ahora debes saber para qué angulo equivale el valor
x = [tex]sen^{-1}[/tex]([tex]\frac{\sqrt{3} }{2}[/tex])
x = 60º
2) 3[tex]sec^{2}x[/tex] - 4 = 0
3[tex]sec^{2}x = 4[/tex]
[tex]sec^{2}x = \frac{4}{3}[/tex]
sec(x) = [tex]\sqrt{\frac{4}{3} }[/tex]= [tex]\frac{2}{\sqrt{3} } *\frac{\sqrt{3} }{\sqrt{3} } = \frac{2\sqrt{3} }{3}[/tex]
x = [tex]sec^{-1} (\frac{2\sqrt{3} }{3})[/tex]
x = 30º
3) [tex]sen^{2} x - senx = 0[/tex]
senx(senx - 1) = 0
senx - 1 = [tex]\frac{0}{senx}[/tex]
senx - 1 = 0
senx = 1
x = [tex]sen^{-1} (1)[/tex]
x = 90º
4) [tex]2cos^{2} x - \sqrt{3} cosx = 0[/tex]
[tex]cosx(2 cosx - \sqrt{3}) = 0[/tex]
[tex](2 cosx - \sqrt{3} ) = \frac{0}{cosx}[/tex]
[tex]2cosx - \sqrt{3} = 0[/tex]
2cosx = [tex]\sqrt{3}[/tex]
cosx = [tex]\frac{\sqrt{3} }{2}[/tex]
x = [tex]cos^{-1}(\frac{\sqrt{3} }{2})[/tex]
5) [tex]tan^{2}x - 3tanx = 0[/tex]
tanx (tanx - 3) = 0
tanx - 3 = [tex]\frac{0}{tanx}[/tex]
tanx - 3 = 0
tanx = 3
x = [tex]tan^{-1} (3)[/tex]
x = 71.56505118≅ 71.57º
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Verified answer
Respuesta:
1) X = 60º
2)X= 30º
3)X= 90º
4) X= 30º
5) X= 71.57
Explicación paso a paso:
Solo es necesario despejar X
1) 2senx - [tex]\sqrt{3}[/tex] = 0
2senx = [tex]\sqrt{3}[/tex]
senx = [tex]\frac{\sqrt{3} }{2}[/tex] Ahora debes saber para qué angulo equivale el valor
x = [tex]sen^{-1}[/tex]([tex]\frac{\sqrt{3} }{2}[/tex])
x = 60º
2) 3[tex]sec^{2}x[/tex] - 4 = 0
3[tex]sec^{2}x = 4[/tex]
[tex]sec^{2}x = \frac{4}{3}[/tex]
sec(x) = [tex]\sqrt{\frac{4}{3} }[/tex]= [tex]\frac{2}{\sqrt{3} } *\frac{\sqrt{3} }{\sqrt{3} } = \frac{2\sqrt{3} }{3}[/tex]
x = [tex]sec^{-1} (\frac{2\sqrt{3} }{3})[/tex]
x = 30º
3) [tex]sen^{2} x - senx = 0[/tex]
senx(senx - 1) = 0
senx - 1 = [tex]\frac{0}{senx}[/tex]
senx - 1 = 0
senx = 1
x = [tex]sen^{-1} (1)[/tex]
x = 90º
4) [tex]2cos^{2} x - \sqrt{3} cosx = 0[/tex]
[tex]cosx(2 cosx - \sqrt{3}) = 0[/tex]
[tex](2 cosx - \sqrt{3} ) = \frac{0}{cosx}[/tex]
[tex]2cosx - \sqrt{3} = 0[/tex]
2cosx = [tex]\sqrt{3}[/tex]
cosx = [tex]\frac{\sqrt{3} }{2}[/tex]
x = [tex]cos^{-1}(\frac{\sqrt{3} }{2})[/tex]
x = 30º
5) [tex]tan^{2}x - 3tanx = 0[/tex]
tanx (tanx - 3) = 0
tanx - 3 = [tex]\frac{0}{tanx}[/tex]
tanx - 3 = 0
tanx = 3
x = [tex]tan^{-1} (3)[/tex]
x = 71.56505118≅ 71.57º
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